| A Pearson Holdings Limited | 250 to 499 staff | 5.0% | 35.0% |
| A J Rayson Limited | Less than 250 staff | 3.1% | 66.7% |
| A.c. Nielsen Company Limited | 500 to 999 staff | 0.5% | 43.5% |
| Abbott Toxicology Limited | 250 to 499 staff | 2.9% | 52.3% |
| Aberdeen Group PLC | 1000 to 4999 staff | 16.0% | 28.0% |
| Abl 1 Touch Management Services Limited | 250 to 499 staff | 29.0% | 8.0% |
| Accenture (UK) Limited | 5000 to 19,999 staff | 19.5% | 31.0% |
| Acorn Care & Education (Ops) Ltd | 5000 to 19,999 staff | 3.9% | 69.0% |
| Acorn Care And Education Limited | 250 to 499 staff | 25.0% | 44.0% |
| Adam Smith International Ltd | Less than 250 staff | 13.0% | 31.5% |
| Admiral Law Limited | 250 to 499 staff | 0.0% | 68.4% |
| Advanced Medical Solutions Group PLC | 250 to 499 staff | 7.6% | 31.0% |
| Aecom Infrastructure & Environment UK Limited | 1000 to 4999 staff | 14.5% | 22.4% |
| Aecom Limited | 1000 to 4999 staff | 16.2% | 19.8% |
| Agilent Technologies Lda UK Limited | 500 to 999 staff | 10.3% | 24.1% |
| Aj Bell PLC | 1000 to 4999 staff | 17.1% | 21.5% |
| Akt II Limited | 250 to 499 staff | 24.4% | 9.0% |
| Albion Fine Foods Limited | 250 to 499 staff | -2.8% | 22.0% |
| Alfred H. Knight Holdings Limited | 250 to 499 staff | 15.3% | 36.7% |
| Alfred H. Knight International Limited | 250 to 499 staff | 15.2% | 27.7% |
| Allclear Holdings Limited | 250 to 499 staff | 0.4% | 44.8% |
| Allen Overy Shearman Sterling Service Company Limited | 1000 to 4999 staff | 43.3% | 52.0% |
| Allford Hall Monaghan Morris Limited | 250 to 499 staff | 12.1% | 27.8% |
| Als Laboratories (UK) Limited | 1000 to 4999 staff | 0.0% | 52.7% |
| Als Managed Services Limited | 500 to 999 staff | 5.1% | 17.0% |
| Alten Ltd | 500 to 999 staff | 4.5% | 11.5% |
| Amazon Online UK Limited | 500 to 999 staff | 7.0% | 42.0% |
| Amey Highways Limited | 500 to 999 staff | 9.5% | 12.0% |
| Amey Ow Limited | 1000 to 4999 staff | -5.6% | 18.0% |
| Amey Owr Limited | 250 to 499 staff | 16.3% | 15.0% |
| Amgen Limited | 500 to 999 staff | 10.0% | 57.1% |
| Amiculum Business Services Limited | 250 to 499 staff | 10.4% | 66.1% |
| Amwins Global Risks Group Limited | 500 to 999 staff | 49.0% | 16.0% |
| Anglian Home Improvements Group Limited | 1000 to 4999 staff | 14.6% | 11.4% |
| Anglo Beef Processors Holdings | 5000 to 19,999 staff | 8.8% | 16.0% |
| Animal Trust Vets C.i.c. | 250 to 499 staff | 41.0% | 70.0% |
| Anschutz Sports Holdings LTD. | 250 to 499 staff | 21.9% | 32.8% |
| Antalis Limited | 500 to 999 staff | 4.1% | 25.0% |
| Ao World PLC | 250 to 499 staff | 29.0% | 28.0% |
| Aon Solutions UK Limited | 1000 to 4999 staff | 23.5% | 30.8% |
| Apem Limited | 250 to 499 staff | 17.0% | 48.0% |
| Applus UK Ltd | 250 to 499 staff | 33.7% | 4.2% |
| Arcadis Human Resources Limited | 1000 to 4999 staff | 22.5% | 20.7% |
| Arjo Limited | 500 to 999 staff | -5.4% | 41.0% |
| Arriva Rail London Limited | 1000 to 4999 staff | 42.3% | 13.8% |
| Arriva UK Bus Limited | 250 to 499 staff | 38.4% | 32.0% |
| Ascot Lloyd Limited | 500 to 999 staff | 27.7% | 26.0% |
| Ashfield Health Limited | 500 to 999 staff | 8.0% | 73.0% |
| Ashurst Perkins Coie Business Services Limited | 500 to 999 staff | 20.0% | 48.0% |
| Ashurst Perkins Coie Commercial Services Ltd | 250 to 499 staff | 16.3% | 51.0% |
| Associated British Foods PLC | 250 to 499 staff | 20.1% | 33.3% |
| Assured Group Holdings Limited | 500 to 999 staff | 2.8% | 8.0% |
| Aston University Consulting Limited | 1000 to 4999 staff | 10.8% | 43.3% |
| Astrazeneca UK Limited | 5000 to 19,999 staff | 4.6% | 43.0% |
| Atkinsrรฉalis Pps Limited | 1000 to 4999 staff | 15.2% | 22.7% |
| Atkinsrรฉalis Rail & Transit Limited | 250 to 499 staff | 29.5% | 5.3% |
| Atkinsrรฉalis UK Limited | 5000 to 19,999 staff | 13.1% | 22.4% |
| Aurora Energy Research Limited | 250 to 499 staff | 4.6% | 34.1% |
| Auto-Sleepers Investments Limited | 250 to 499 staff | 1.8% | 17.0% |
| Avalere Health Global Limited | 250 to 499 staff | 15.2% | 57.0% |
| Axa UK PLC | 1000 to 4999 staff | 11.0% | 39.3% |
| Azets Holdings Limited | 1000 to 4999 staff | 11.6% | 40.5% |
| B And G (Group) Limited | 250 to 499 staff | -2.1% | 64.9% |
| Banham Patent Locks Limited | 250 to 499 staff | 10.0% | 13.0% |
| Barchester Healthcare Limited | 20,000 or more staff | 1.5% | 75.9% |
| Barking & Dagenham Trading Partnership Ltd | 500 to 999 staff | 0.0% | 85.2% |
| Basec Limited | Less than 250 staff | -4.7% | 40.0% |
| Battersea Dogs' And Cats' Home | 500 to 999 staff | 13.7% | 67.7% |
| Bauer Media Outdoor UK Limited | 500 to 999 staff | -29.2% | 45.0% |
| Bauer Radio Limited | 500 to 999 staff | 10.9% | 44.4% |
| Bb Partnership Limited | Less than 250 staff | 17.9% | 66.7% |
| Beatson Institute For Cancer Research | 250 to 499 staff | 4.3% | 47.1% |
| Belron International Limited | 250 to 499 staff | 11.0% | 30.0% |
| Bespoke Hotels (Isis) 2 Limited | 250 to 499 staff | 3.7% | 39.6% |
| Bestway Panacea Holdings Limited | 5000 to 19,999 staff | -0.3% | 59.7% |
| Big Yellow Group PLC | 250 to 499 staff | 6.0% | 31.0% |
| Bioreliance LTD. | 500 to 999 staff | -2.1% | 61.0% |
| Bk Plus Limited | 500 to 999 staff | 28.3% | 32.0% |
| Blick Rothenberg Limited | 500 to 999 staff | 1.8% | 42.3% |
| Blue Square Marketing Limited | 250 to 499 staff | 0.0% | 37.9% |
| Bmt Limited | 500 to 999 staff | 19.5% | 16.6% |
| Bollin Group Limited | 250 to 499 staff | 10.6% | 25.0% |
| Bond Turner Limited | 500 to 999 staff | 26.0% | 39.0% |
| BP P.L.C. | 1000 to 4999 staff | 13.9% | 33.0% |
| Bpp Holdings Limited | 500 to 999 staff | 9.5% | 44.0% |
| Brambles Holdings (UK) Limited | 250 to 499 staff | 13.1% | 37.7% |
| Bridewell Consulting Limited | 250 to 499 staff | 22.0% | 16.0% |
| Briggs & Forrester (UK) Limited | 500 to 999 staff | 36.5% | 2.4% |
| Briggs & Forrester Group Limited | 500 to 999 staff | 36.5% | 2.4% |
| Bristows (Services) Limited | 250 to 499 staff | 23.9% | 61.3% |
| British American Tobacco (Investments) Limited | 500 to 999 staff | 8.0% | 46.0% |
| British Assessment Bureau Limited | 250 to 499 staff | 8.0% | 45.0% |
| British Engineering Services Limited | 500 to 999 staff | 29.5% | 14.8% |
| British Medical Association | 500 to 999 staff | 7.1% | 57.0% |
| British-American Tobacco (Holdings) Limited | 250 to 499 staff | 34.0% | 30.0% |
| Bromley Gp Alliance Limited | 250 to 499 staff | -26.3% | 76.0% |
| Brookson Limited | Less than 250 staff | 31.8% | 38.2% |
| Brookson Solutions Limited | 1000 to 4999 staff | 9.8% | 18.5% |
| Browns Food Group Limited | 500 to 999 staff | 0.0% | 27.0% |
| Bruce's Pet Care Ltd | 250 to 499 staff | 0.0% | 63.2% |
| Btg Begbies Traynor Limited | 500 to 999 staff | 18.8% | 33.3% |
| Building Design Partnership Limited | 500 to 999 staff | 17.6% | 27.0% |
| Building Research Establishment Limited | 500 to 999 staff | 8.3% | 30.6% |
| Bureau Veritas UK Limited | 500 to 999 staff | 23.0% | 26.0% |
| Burhill Group Limited | 1000 to 4999 staff | 0.0% | 35.0% |
| Buro Happold Engineers Limited | 1000 to 4999 staff | 21.3% | 29.0% |
| Burson Group Limited | 250 to 499 staff | 13.3% | 62.9% |
| Bw Legal Services Limited | 250 to 499 staff | 9.0% | 29.0% |
| Bwb Consulting Limited | 250 to 499 staff | 21.0% | 15.0% |
| C.s. Ellis (Holdings) Limited | 250 to 499 staff | 6.0% | 38.0% |
| Cadence Design Systems Limited | 250 to 499 staff | 25.5% | 14.5% |
| Caffe Nero Group Holdings Ltd | 5000 to 19,999 staff | 0.3% | 59.2% |
| Calero Mdsl Limited | 250 to 499 staff | 9.0% | 23.9% |
| Calex UK Ltd | 250 to 499 staff | 18.0% | 19.5% |
| Calisen Metering Services Limited | 1000 to 4999 staff | 10.2% | 9.4% |
| Cambian Group Holdings II Limited | 250 to 499 staff | -28.5% | 55.5% |
| Cambridge Consultants Limited | 500 to 999 staff | 22.6% | 18.7% |
| Campden Bri (Chipping Campden) Limited | 250 to 499 staff | 5.7% | 58.0% |
| Cancer Research Technology Limited | 250 to 499 staff | 9.0% | 42.0% |
| Carl Zeiss Ltd | 250 to 499 staff | 22.7% | 19.7% |
| Carlisle Support Services Group Limited | 5000 to 19,999 staff | 1.2% | 11.8% |
| Carpenters Limited | 1000 to 4999 staff | 14.5% | 41.5% |
| Carpmaels & Ransford Services Limited | 250 to 499 staff | 26.6% | 55.9% |
| Cawood Scientific Limited | 500 to 999 staff | 0.1% | 44.5% |
| Ccep Group Services Limited | 250 to 499 staff | 6.2% | 38.6% |
| Cell Therapy Catapult Limited | 250 to 499 staff | -0.2% | 45.6% |
| Cellnex UK Limited | 250 to 499 staff | 13.0% | 33.8% |
| Celltech R&d Limited | 500 to 999 staff | 16.2% | 51.0% |
| Celtic Manor Service Company Limited | 250 to 499 staff | 1.7% | 36.8% |
| Centaur Services Limited | 250 to 499 staff | -2.4% | 36.4% |
| Center Parcs (Operating Company) Limited | 1000 to 4999 staff | 2.7% | 52.4% |
| Centre For Process Innovation Limited | 500 to 999 staff | 9.0% | 34.4% |
| Ceres Power Limited | 250 to 499 staff | 12.3% | 17.0% |
| Cgg Services (UK) Limited | 500 to 999 staff | 10.1% | 16.0% |
| Ch4 Gas Utility And Maintenance Services Limited | 500 to 999 staff | 38.5% | 7.0% |
| Charles River Laboratories Edinburgh Limited | 1000 to 4999 staff | 2.1% | 53.0% |
| Charles Taylor Limited | 250 to 499 staff | 42.5% | 13.0% |
| Chelsea Fc Holdings Limited | 250 to 499 staff | 8.0% | 31.8% |
| Chivas Brothers International Limited | 250 to 499 staff | 14.0% | 45.0% |
| Christian Aid | 250 to 499 staff | 6.7% | 58.7% |
| Chubb Fire & Security Limited | 1000 to 4999 staff | 27.4% | 14.0% |
| Circle Clinical Services Limited | 250 to 499 staff | 40.0% | 49.3% |
| Citation Limited | 500 to 999 staff | 20.0% | 32.0% |
| City And County Healthcare Group Limited | 500 to 999 staff | 11.1% | 74.0% |
| Clarion Solicitors Limited | 250 to 499 staff | 29.0% | 71.0% |
| Cleansing Service Group Limited | 500 to 999 staff | 7.1% | 20.8% |
| Clermont Hotel Group Limited | 1000 to 4999 staff | 0.2% | 37.9% |
| Clic Sargent Cancer Care For Children | 250 to 499 staff | 3.9% | 82.0% |
| Clinical Partners Limited | 500 to 999 staff | 17.0% | 70.2% |
| Clinigen Limited | 250 to 499 staff | 13.3% | 53.0% |
| Clipper Contracting Group Ltd | 1000 to 4999 staff | -24.0% | 13.0% |
| College Of Policing Limited | 500 to 999 staff | 4.0% | 64.1% |
| Collinson International Limited | 500 to 999 staff | 22.1% | 27.7% |
| Combined Precision Components Limited | 250 to 499 staff | -1.6% | 19.1% |
| Compass Group, UK And Ireland Limited | 20,000 or more staff | 6.0% | 45.1% |
| Connected Places Catapult | 250 to 499 staff | 12.8% | 30.9% |
| Connells Survey & Valuation Limited | 500 to 999 staff | 54.0% | 22.0% |
| Conocophillips (U.K.) Holdings Limited | 250 to 499 staff | -1.7% | 16.0% |
| Construction Testing Solutions Limited | 250 to 499 staff | 10.0% | 19.7% |
| Consumers' Association | 250 to 499 staff | -4.8% | 66.0% |
| Contractor Umbrella Limited | 500 to 999 staff | 33.9% | 27.1% |
| Conveyancing Direct Limited | 250 to 499 staff | 3.0% | 61.0% |
| Cooper Parry Advisory Limited | 500 to 999 staff | 11.4% | 53.9% |
| Corserv Limited | Less than 250 staff | 37.3% | 63.0% |
| Corstorphine & Wright Limited | 250 to 499 staff | 25.4% | 13.0% |
| Cory Environmental Holdings Limited | 250 to 499 staff | -3.0% | 18.0% |
| Costello Medical Consulting Limited | 250 to 499 staff | 19.3% | 63.5% |
| Cosworth Limited | 250 to 499 staff | 14.7% | 2.2% |
| Cotswold Archaeology Limited | 250 to 499 staff | 1.3% | 42.0% |
| Coventry University Enterprises Limited | 250 to 499 staff | 37.1% | 22.7% |
| Cowi UK Limited | 250 to 499 staff | 28.0% | 18.0% |
| Creative Lynx Limited | 250 to 499 staff | 16.0% | 49.0% |
| Credera Limited | 250 to 499 staff | 32.6% | 18.5% |
| Croner Group Limited | 250 to 499 staff | 25.4% | 26.0% |
| Croud Inc Ltd | 250 to 499 staff | 12.7% | 44.3% |
| Cru International Limited | 250 to 499 staff | 24.6% | 21.2% |
| Culina Group Limited | 500 to 999 staff | 28.6% | 22.9% |
| Cumming Management Group UK Ltd | 500 to 999 staff | 19.0% | 15.0% |
| Currie & Brown UK Limited | 500 to 999 staff | 22.0% | 13.0% |
| Curtins Consulting Limited | 250 to 499 staff | 20.7% | 13.0% |
| Curzon World Limited | 250 to 499 staff | 0.0% | 43.0% |
| Cvs (UK) Limited | 5000 to 19,999 staff | 37.9% | 71.3% |
| D&d London Limited | 1000 to 4999 staff | 6.0% | 26.0% |
| Dac Beachcroft Claims Limited | 1000 to 4999 staff | 21.7% | 57.4% |
| Dains Accountants Limited | 250 to 499 staff | 20.3% | 36.1% |
| Dalcour Maclaren Limited | 500 to 999 staff | 3.7% | 40.0% |
| Daniel J. Edelman Limited | 500 to 999 staff | 18.3% | 58.2% |
| Danone Holdings (UK) | Less than 250 staff | -17.4% | 64.5% |
| Davisons Solicitors Limited | 250 to 499 staff | 14.7% | 68.0% |
| Dayforce EMEA Limited | 250 to 499 staff | 0.3% | 42.4% |
| Dazn Limited | 500 to 999 staff | -7.0% | 21.0% |
| De Montfort Expertise Limited | 1000 to 4999 staff | 0.0% | 65.2% |
| Deloitte Mcs Limited | 5000 to 19,999 staff | 12.2% | 32.8% |
| Delta Capita LTD. | 250 to 499 staff | 13.8% | 29.0% |
| Dentsu International Limited | 250 to 499 staff | 11.7% | 51.5% |
| Dentsu UK Limited | 1000 to 4999 staff | 16.7% | 38.6% |
| Diamond Light Source Limited | 500 to 999 staff | 10.4% | 17.0% |
| Digital Catapult | 250 to 499 staff | 21.0% | 25.0% |
| Digitaslbi Limited | 250 to 499 staff | 23.5% | 44.2% |
| Dna Vetcare Ltd | 250 to 499 staff | 51.9% | 58.0% |
| Dnv Services UK Limited | 500 to 999 staff | 14.1% | 22.0% |
| Dogs Trust | 1000 to 4999 staff | 7.7% | 74.0% |
| Dornan Engineering Services Limited | 250 to 499 staff | 35.9% | 6.9% |
| Ds Smith Limited | 250 to 499 staff | 4.5% | 36.4% |
| Duncan Lewis Solicitors Ltd | 250 to 499 staff | 2.0% | 71.0% |
| Dunnhumby Limited | 1000 to 4999 staff | 18.5% | 38.5% |
| E.on Control Solutions Limited | 250 to 499 staff | 36.5% | 6.1% |
| Eastern Holdings Limited | 1000 to 4999 staff | 21.6% | 11.1% |
| Ecotricity Group Ltd | 500 to 999 staff | 14.7% | 38.0% |
| Efficio Limited | 250 to 499 staff | 13.8% | 25.8% |
| Elbit Systems UK Limited | 250 to 499 staff | 24.8% | 15.4% |
| Element Materials Technology Environmental UK Limited | 250 to 499 staff | 18.3% | 22.0% |
| Enact Conveyancing Limited | 250 to 499 staff | 4.7% | 54.0% |
| Energy Systems Catapult Limited | 250 to 499 staff | 19.8% | 33.0% |
| Engie Renewable Gases UK Limited | Less than 250 staff | -35.9% | 18.2% |
| Environmental Resources Management Limited | 500 to 999 staff | 11.3% | 33.0% |
| Envision Pharma Holdco Limited | 250 to 499 staff | 8.0% | 48.4% |
| Ergea UK And Ireland Limited | 250 to 499 staff | 24.3% | 20.8% |
| ERM Europe Limited | 250 to 499 staff | 24.2% | 37.0% |
| Essencemediacom Holdings Limited | 500 to 999 staff | 11.0% | 40.2% |
| Eurofins Food Testing UK Limited | 500 to 999 staff | -3.2% | 58.4% |
| Eurofins Forensic Services Limited | 500 to 999 staff | 8.3% | 56.3% |
| European Tyre Enterprise Limited | 250 to 499 staff | 23.0% | 23.0% |
| Eville & Jones (Commercial Services) Limited | 250 to 499 staff | 21.8% | 45.9% |
| Eville & Jones (G.B.) Limited | 500 to 999 staff | -20.9% | 40.4% |
| Evotec (UK) Limited | 250 to 499 staff | 12.4% | 37.4% |
| Exchange House Services Limited | 1000 to 4999 staff | 39.5% | 51.0% |
| Expd8 Limited | 1000 to 4999 staff | 0.0% | 83.0% |
| Expleo UK Limited | 1000 to 4999 staff | 13.0% | 13.0% |
| Express Solicitors Limited | 500 to 999 staff | 19.0% | 56.0% |
| EY Global Services Limited | 250 to 499 staff | 14.9% | 39.4% |
| Facebook UK Ltd | 1000 to 4999 staff | 0.8% | 25.7% |
| Fairhurst | 250 to 499 staff | 15.6% | 12.2% |
| Fera Science Limited | 500 to 999 staff | 6.2% | 43.0% |
| Fifty5blue Audiences Ltd | 250 to 499 staff | -22.9% | 33.0% |
| First Leicester Buses Limited | 250 to 499 staff | 1.9% | 3.3% |
| First Option Healthcare Limited | 500 to 999 staff | 0.0% | 92.0% |
| Firstport Group Limited | 500 to 999 staff | 0.8% | 49.5% |
| Flint Bishop Limited | 250 to 499 staff | 21.6% | 44.0% |
| Fluor Limited | 500 to 999 staff | 27.3% | 16.0% |
| Forester Holdings (Europe) Limited | 250 to 499 staff | 23.8% | 36.0% |
| Foretwo Group Limited | 1000 to 4999 staff | 7.5% | 28.0% |
| Fortrea Clinical Research Unit Limited | 250 to 499 staff | 19.6% | 52.2% |
| Fortrea Development Limited | 250 to 499 staff | 14.3% | 57.7% |
| Fpcr Environment And Design Limited | 250 to 499 staff | 10.5% | 38.1% |
| Frazer-Nash Consultancy Limited | 1000 to 4999 staff | 22.8% | 14.0% |
| Fremantlemedia Group Limited | 500 to 999 staff | 17.0% | 52.6% |
| Fresca Group Limited | 1000 to 4999 staff | 5.2% | 30.0% |
| Frontier Economics Limited | 250 to 499 staff | 10.2% | 29.9% |
| Frp Advisory Group PLC | 500 to 999 staff | 26.6% | 30.0% |
| Fugro GB (North) Marine Limited | 500 to 999 staff | 17.0% | 10.5% |
| Fugro GB Limited | 1000 to 4999 staff | 14.5% | 15.8% |
| Furniture Village Holdings Limited | 1000 to 4999 staff | 12.0% | 19.4% |
| Futures Housing Group Limited | 250 to 499 staff | 2.0% | 36.0% |
| G4s Regional Management (UK & I) Limited | Less than 250 staff | 4.3% | 41.8% |
| Gardline Limited | 250 to 499 staff | 12.8% | 13.4% |
| Gardner Denver Group Services Limited | 500 to 999 staff | 1.2% | 17.3% |
| Gateley PLC | 1000 to 4999 staff | 36.6% | 41.9% |
| Gatwick Ground Services Limited | 500 to 999 staff | 6.9% | 25.9% |
| Gekko Partners LTD. | 250 to 499 staff | -8.0% | 15.0% |
| Genome Research Limited | 1000 to 4999 staff | 8.2% | 48.4% |
| Genomics England Limited | 500 to 999 staff | 14.0% | 36.0% |
| Gensler Europe, Ltd | 250 to 499 staff | 13.5% | 40.5% |
| Genus Breeding Limited | 500 to 999 staff | 11.6% | 29.0% |
| Gerson Lehrman Group Limited | 250 to 499 staff | 7.2% | 54.7% |
| Gibson Dunn & Crutcher UK LLP | 250 to 499 staff | -4.4% | 54.8% |
| Glaxosmithkline Services Unlimited | 5000 to 19,999 staff | -7.0% | 49.4% |
| Global Outdoor Media Limited | Less than 250 staff | -20.9% | 42.5% |
| Globalization Partners LTD. | 1000 to 4999 staff | 20.2% | 27.2% |
| Goddard Veterinary Group Limited | 500 to 999 staff | 46.7% | 68.8% |
| Goonvean Holdings Limited | 500 to 999 staff | -1.0% | 18.0% |
| Gravity Media UK Services Limited | 250 to 499 staff | 5.7% | 22.5% |
| Grayce Group Limited | 250 to 499 staff | -10.8% | 48.0% |
| Grimshaw Services Limited | Less than 250 staff | 9.6% | 43.4% |
| Grosvenor Estate Management Limited | 250 to 499 staff | 31.4% | 34.3% |
| Ground Control Holdings Limited | 1000 to 4999 staff | 6.3% | 23.5% |
| Gutteridge Haskins & Davey Limited | 250 to 499 staff | 22.1% | 15.2% |
| Gxo Logistics UK II Limited | 5000 to 19,999 staff | 13.6% | 33.2% |
| H Holdco 2026 Limited | 1000 to 4999 staff | -2.8% | 61.2% |
| H. B. Leisure Holdings LTD. | 500 to 999 staff | 2.2% | 36.0% |
| H.tempest Limited | 500 to 999 staff | 3.3% | 54.1% |
| Halliburton Energy Services Limited | 1000 to 4999 staff | 11.0% | 11.0% |
| Hallmark Care Homes Group Holdings Limited | 1000 to 4999 staff | 0.3% | 71.9% |
| Hammersmith Medicines Research Limited | 250 to 499 staff | 6.1% | 55.0% |
| Hammerson Group Management Limited | Less than 250 staff | 33.1% | 26.9% |
| Hargreaves Industrial Services Limited | 250 to 499 staff | 24.1% | 4.8% |
| Hartwell PLC | 250 to 499 staff | 20.7% | 15.5% |
| Haskins Group Limited | 500 to 999 staff | 9.6% | 48.4% |
| Haskoning UK Limited | 500 to 999 staff | 30.6% | 12.0% |
| Havas Media Limited | 250 to 499 staff | 17.0% | 54.0% |
| Hawkins Brown Architecture Limited | Less than 250 staff | 9.4% | 30.8% |
| Hazlewoods Management Services Limited | 500 to 999 staff | -12.3% | 59.0% |
| HC-One Management Limited | 1000 to 4999 staff | -15.6% | 81.0% |
| Hcl Technologies UK Limited | 1000 to 4999 staff | 10.9% | 12.0% |
| Hdr Consulting Limited | 250 to 499 staff | 41.1% | 11.0% |
| Healthcare Business Solutions (UK) Limited | 1000 to 4999 staff | 26.1% | 41.7% |
| Henkel Limited | 500 to 999 staff | 29.1% | 36.0% |
| Hf Limited | 500 to 999 staff | 20.8% | 49.5% |
| Hgf Business Services Limited | 250 to 499 staff | 51.2% | 39.0% |
| Hiddenwell Limited | 500 to 999 staff | -3.1% | 75.6% |
| Highjam Marketing Limited | Less than 250 staff | 0.0% | 60.0% |
| Hilton Food Group PLC | 1000 to 4999 staff | 5.9% | 30.6% |
| Hollis Global Limited | 250 to 499 staff | 34.0% | 12.0% |
| Hoople Ltd | 500 to 999 staff | 16.8% | 48.1% |
| Horiba Mira Limited | 500 to 999 staff | 12.0% | 11.5% |
| Hr Go PLC | 1000 to 4999 staff | 2.7% | 38.3% |
| Hr Wallingford Limited | 250 to 499 staff | 22.7% | 17.2% |
| Hsb Engineering Insurance Services Limited | 250 to 499 staff | 28.0% | 4.5% |
| Hugh James | 500 to 999 staff | 22.3% | 59.1% |
| Husp Limited | 500 to 999 staff | 3.1% | 31.0% |
| Hw Fisher Service Limited | 250 to 499 staff | -4.8% | 41.9% |
| Hydrosave UK Limited | 250 to 499 staff | -10.8% | 16.4% |
| I.f.f Research Limited | 500 to 999 staff | 1.4% | 57.0% |
| I4 Pay Partners Limited | 1000 to 4999 staff | 5.5% | 64.6% |
| Icmp Management Limited | 500 to 999 staff | 6.4% | 36.0% |
| Icon Clinical Research (U.K.) Limited | 1000 to 4999 staff | 6.4% | 61.9% |
| Idexx Laboratories Limited | 250 to 499 staff | 13.3% | 57.6% |
| Idverde UK Limited | 1000 to 4999 staff | -1.4% | 13.2% |
| Ifc Certification Limited | Less than 250 staff | 44.0% | 0.0% |
| Illumina Cambridge Limited | 500 to 999 staff | 9.1% | 43.8% |
| Immunocore Limited | 250 to 499 staff | 19.1% | 47.6% |
| In-House Research Limited | Less than 250 staff | -8.2% | 67.0% |
| Informa Events Limited | 500 to 999 staff | 12.4% | 50.0% |
| Informa Group Limited | 500 to 999 staff | 26.7% | 37.9% |
| Infotrack Limited | 250 to 499 staff | 30.7% | 25.0% |
| Infy Consulting Company Limited | 500 to 999 staff | 22.8% | 11.4% |
| Inizio Engage Xd Limited | 250 to 499 staff | 1.0% | 62.5% |
| Inside Ideas Group Ltd | 250 to 499 staff | 10.7% | 41.3% |
| Insights Learning & Development Limited | 250 to 499 staff | 18.4% | 44.0% |
| Inspired Limited | 500 to 999 staff | 23.1% | 34.3% |
| Inspiring Vet Care Limited | 5000 to 19,999 staff | 51.7% | 68.4% |
| Institute Of Development Studies(The) | 250 to 499 staff | 22.0% | 45.0% |
| Intel Corporation (UK) Limited | 250 to 499 staff | 18.5% | 29.0% |
| Intermarine UK Limited | 500 to 999 staff | 4.2% | 1.6% |
| Intermarketing Agency Limited | 250 to 499 staff | 14.6% | 46.2% |
| International Fire Consultants Limited | Less than 250 staff | 30.3% | 16.7% |
| International Nuclear Services Limited | Less than 250 staff | 14.0% | 26.0% |
| International Rescue Committee, U.K. | Less than 250 staff | 12.0% | 66.0% |
| Interpath Ltd | 500 to 999 staff | 27.5% | 21.4% |
| Investigo Limited | 250 to 499 staff | 19.9% | 23.5% |
| Ipg Dxtra (UK) Limited | 250 to 499 staff | -10.7% | 63.0% |
| Ipg Health Medical Communications Limited | 250 to 499 staff | 13.5% | 72.1% |
| Ipsos (Market Research) Ltd | 250 to 499 staff | 15.2% | 51.0% |
| Ipsos Mori UK Limited | 1000 to 4999 staff | 6.4% | 51.0% |
| Iqvia Ies UK Limited | 250 to 499 staff | 21.2% | 53.8% |
| Iqvia Laboratories Discovery UK Ltd | 500 to 999 staff | 6.0% | 37.0% |
| Iqvia Laboratories Ltd | 1000 to 4999 staff | -2.4% | 68.7% |
| Ison Harrison Limited | 250 to 499 staff | 27.6% | 58.3% |
| Iss UK Limited | 500 to 999 staff | 25.0% | 48.0% |
| Its Testing Services (UK) Limited | 1000 to 4999 staff | 10.4% | 31.0% |
| ITV Consumer Limited | 250 to 499 staff | 17.6% | 29.9% |
| Jackson Lees Group Ltd | Less than 250 staff | 12.5% | 67.0% |
| Jacobs U.K. Limited | 5000 to 19,999 staff | 19.1% | 22.2% |
| Janus Henderson Administration UK Limited | 1000 to 4999 staff | 20.8% | 22.0% |
| Jazz Pharmaceuticals Research UK Limited | 250 to 499 staff | 7.6% | 42.4% |
| Jcdecaux UK Limited | 500 to 999 staff | -20.6% | 35.3% |
| Jellyfish U.K. Limited | 250 to 499 staff | 15.3% | 35.5% |
| Jeremy Benn Associates Limited | 500 to 999 staff | 12.1% | 29.2% |
| Jncc Support Co | 250 to 499 staff | 0.0% | 59.2% |
| John Innes Centre | 250 to 499 staff | 6.8% | 30.0% |
| John O'conner (Grounds Maintenance) Limited | 250 to 499 staff | -4.0% | 10.0% |
| Kci Medical Limited | 250 to 499 staff | 15.0% | 26.5% |
| Kent Energies UK LTD. | 250 to 499 staff | 26.2% | 13.9% |
| Kenvue EMEA Services Limited | 250 to 499 staff | 4.2% | 50.7% |
| Kier Limited | 5000 to 19,999 staff | 23.9% | 16.0% |
| Kingdom Services Group Limited | 1000 to 4999 staff | -2.4% | 12.0% |
| Kingfisher PLC | 250 to 499 staff | 16.9% | 40.6% |
| Kinly UK Ltd | 250 to 499 staff | 18.9% | 21.0% |
| Kirkland & Ellis International LLP | 500 to 999 staff | 62.3% | 42.4% |
| Kiwa Limited | 250 to 499 staff | 15.9% | 36.1% |
| Knight Frank Services Company Limited | 1000 to 4999 staff | 17.5% | 48.5% |
| Knights Professional Services Limited | 1000 to 4999 staff | 25.0% | 44.0% |
| Knowledge Transfer Network Limited | 250 to 499 staff | 11.1% | 39.0% |
| Korn Ferry (UK) Limited | 500 to 999 staff | 33.5% | 37.0% |
| L.c.p. Management Limited | 250 to 499 staff | 36.4% | 23.6% |
| Labcorp Early Development Laboratories Limited | 1000 to 4999 staff | 4.9% | 47.8% |
| Lambert Smith Hampton Limited | 1000 to 4999 staff | 39.5% | 16.6% |
| Land Use Consultants Limited | 250 to 499 staff | -2.1% | 52.0% |
| Langford Veterinary Services Limited | 250 to 499 staff | 27.1% | 73.0% |
| Langham Industries Limited | 250 to 499 staff | 15.0% | 16.0% |
| Latham & Watkins (London) LLP | 500 to 999 staff | 48.6% | 44.0% |
| Lee Hecht Harrison Penna Limited | 250 to 499 staff | 12.1% | 48.9% |
| Legal & General Resources Limited | 5000 to 19,999 staff | 25.0% | 36.4% |
| Legends Global Holdings Limited | 1000 to 4999 staff | 5.6% | 37.2% |
| Leica Biosystems Newcastle Limited | 250 to 499 staff | -1.1% | 56.0% |
| Leigh Day | 500 to 999 staff | -0.9% | 63.0% |
| Leisure Employment Services Limited | 5000 to 19,999 staff | 0.0% | 43.6% |
| Leo Burnett Limited | 250 to 499 staff | 23.3% | 47.6% |
| Leonard Curtis (UK) Limited | 250 to 499 staff | 26.4% | 36.8% |
| Lgc Limited | 1000 to 4999 staff | 8.1% | 52.9% |
| Liberata UK Limited | 1000 to 4999 staff | 8.3% | 55.1% |
| Liberty Blume Business Solutions Limited | 500 to 999 staff | 16.1% | 40.0% |
| Liberty Retail Limited | 500 to 999 staff | 4.8% | 68.0% |
| Liberty Specialty Markets Limited | 1000 to 4999 staff | 16.4% | 31.8% |
| Lifearc | 250 to 499 staff | 15.4% | 54.5% |
| Lind Group Holding Company Limited | 250 to 499 staff | 19.0% | 8.0% |
| Linecross Group Limited | 250 to 499 staff | 13.1% | 16.0% |
| Linnaeus Group Limited | 5000 to 19,999 staff | 45.5% | 67.6% |
| Liverpool School Of Tropical Medicine | 500 to 999 staff | 5.6% | 52.8% |
| Lloyds Wealth Management Limited | 500 to 999 staff | 22.3% | 29.3% |
| Lockheed Martin UK Limited | 500 to 999 staff | 13.1% | 19.1% |
| London & Partners Limited | 250 to 499 staff | 3.8% | 66.0% |
| London Clubs Management Limited | 1000 to 4999 staff | 5.4% | 32.5% |
| Lords Group Trading PLC | 500 to 999 staff | 5.7% | 20.0% |
| Low Carbon Contracts Company Ltd | 250 to 499 staff | 9.6% | 34.0% |
| Lrg Employees Limited | 1000 to 4999 staff | 20.7% | 32.8% |
| Lucid Group Communications Limited | 250 to 499 staff | 11.7% | 70.0% |
| Lucion Services Limited | 250 to 499 staff | 22.0% | 9.4% |
| Ludlow Street Healthcare Group Limited | 1000 to 4999 staff | -0.9% | 68.4% |
| Luxfer Holdings PLC | 500 to 999 staff | 3.4% | 16.0% |
| Lw Theatres Group Limited | 500 to 999 staff | 16.2% | 39.6% |
| Lyons Davidson Limited | 250 to 499 staff | 1.6% | 63.1% |
| M Group Energy (Metering) Limited | 1000 to 4999 staff | -0.1% | 13.3% |
| M Group Water (Meica Maintenance & Projects) Limited | 250 to 499 staff | 27.9% | 4.0% |
| M&g Fa Limited | 1000 to 4999 staff | 22.6% | 27.0% |
| M&s On-Time Services Ltd | Less than 250 staff | 0.0% | 2.0% |
| Mac Clinical Research Ltd | 250 to 499 staff | 16.7% | 66.3% |
| Mace Consult Limited | 1000 to 4999 staff | 16.2% | 25.0% |
| Magnit Global UK Limited | 500 to 999 staff | 8.0% | 47.0% |
| Mainpay Limited | 5000 to 19,999 staff | 13.5% | 72.2% |
| Malhotra Family Holdings Limited | 1000 to 4999 staff | 0.0% | 67.9% |
| Man Group Services Limited | 1000 to 4999 staff | 22.0% | 21.1% |
| Marketing Vf Ltd | 250 to 499 staff | 21.4% | 21.5% |
| Marshalls Group Limited | 1000 to 4999 staff | 14.5% | 12.0% |
| Marshalls PLC | Less than 250 staff | 32.9% | 41.0% |
| Marston's Trading Limited | 5000 to 19,999 staff | 0.0% | 42.0% |
| Marwell Wildlife | 250 to 499 staff | 2.4% | 58.4% |
| Max Spielmann Limited | 500 to 999 staff | 0.0% | 68.0% |
| Mccann Manchester Limited | 250 to 499 staff | 10.2% | 49.5% |
| Mccann-Erickson Advertising Limited | 250 to 499 staff | 23.5% | 48.3% |
| Mccann-Erickson Central Limited | 250 to 499 staff | 23.5% | 36.0% |
| Mcghee Group Limited | 250 to 499 staff | 0.0% | 23.0% |
| Mclean & Appleton (Holdings) Limited | 250 to 499 staff | 29.4% | 14.3% |
| Mediabrands Limited | 500 to 999 staff | 9.3% | 48.3% |
| Medivet Group Limited | 1000 to 4999 staff | 42.2% | 64.5% |
| Mercedes Amg High Performance Powertrains Limited | 500 to 999 staff | 37.9% | 5.9% |
| Merck Sharp & Dohme (UK) Limited | 1000 to 4999 staff | 11.3% | 45.9% |
| Merlin Attractions Operations Limited | 5000 to 19,999 staff | 1.3% | 42.4% |
| Metrol Technology Limited | 250 to 499 staff | 22.0% | 11.1% |
| Mice And Dice Limited | 250 to 499 staff | 4.9% | 39.2% |
| microsearch laboratories ltd | Less than 250 staff | -0.9% | 44.0% |
| Mii Engineering Limited | 250 to 499 staff | 24.6% | 1.3% |
| Mindshare Media UK Limited | 500 to 999 staff | 11.1% | 49.2% |
| Minster Law Limited | 250 to 499 staff | 18.8% | 50.0% |
| Mintel Group Ltd | 250 to 499 staff | 34.0% | 36.4% |
| Mission Mars Limited | 1000 to 4999 staff | 6.0% | 34.0% |
| Moco Claims And Services Limited | 500 to 999 staff | -4.8% | 54.6% |
| Moonpig Group PLC | Less than 250 staff | 26.3% | 33.7% |
| Morleys Stores Limited | 500 to 999 staff | 0.2% | 65.7% |
| Mortgage Advice Bureau (Holdings) PLC | 500 to 999 staff | 17.0% | 35.0% |
| Mortimer Childe Ltd | 250 to 499 staff | 15.7% | 32.2% |
| Mott Macdonald Limited | 5000 to 19,999 staff | 18.5% | 22.0% |
| MS Amlin Corporate Services Limited | 500 to 999 staff | 21.9% | 30.9% |
| MS International PLC | 250 to 499 staff | 9.1% | 11.8% |
| Msd Animal Health UK Limited | 250 to 499 staff | 4.7% | 45.8% |
| Mtc Operations Limited | 500 to 999 staff | 8.3% | 23.0% |
| Munich Re UK Services Limited | 250 to 499 staff | 14.2% | 30.9% |
| Murgitroyd & Company Limited | 250 to 499 staff | 51.8% | 39.0% |
| Mwh Farrer Limited | 250 to 499 staff | 15.8% | 12.8% |
| My Home Move Ltd | 500 to 999 staff | 13.6% | 53.1% |
| Myers Group 1959 Ltd | 250 to 499 staff | -0.8% | 6.9% |
| Nathaniel Lichfield & Partners Limited | 250 to 499 staff | 24.8% | 28.5% |
| National Centre For Social Research | 500 to 999 staff | -5.6% | 67.0% |
| National Exhibition Centre Limited (The) | 1000 to 4999 staff | 8.4% | 47.1% |
| National Grid Commercial Holdings Limited | 250 to 499 staff | 12.5% | 49.5% |
| National Oceanography Centre | 500 to 999 staff | 0.1% | 32.6% |
| Nbcuniversal International Limited | 250 to 499 staff | 2.9% | 51.6% |
| Ncc Operations Limited | 250 to 499 staff | 11.6% | 21.0% |
| Ncr Financial Solutions Group Limited | 500 to 999 staff | 4.9% | 21.1% |
| Nesta | 250 to 499 staff | 5.0% | 54.0% |
| Nestec York LTD. | Less than 250 staff | 16.0% | 31.0% |
| Nestle Global Services UK Limited | 250 to 499 staff | 18.0% | 42.0% |
| Newlaw Legal Limited | 250 to 499 staff | 13.8% | 60.3% |
| Newton Consulting Limited | 500 to 999 staff | 22.1% | 35.6% |
| Nicholas Associates Group Limited | 1000 to 4999 staff | 7.0% | 39.7% |
| Nicholls & Clarke Limited | 250 to 499 staff | 2.3% | 11.6% |
| Nm Wpp Administration Ltd | 1000 to 4999 staff | 0.0% | 24.0% |
| Norcros Group (Holdings) Limited | 500 to 999 staff | 16.4% | 33.9% |
| North Highland UK Limited | 250 to 499 staff | 9.2% | 36.6% |
| Notts Pharma UK Ltd | Less than 250 staff | -1.6% | 45.5% |
| NSK Europe Limited | 500 to 999 staff | 9.7% | 25.5% |
| NTT Ltd Group Services United Kingdom Limited | 250 to 499 staff | 15.0% | 25.8% |
| Nucleus Group Services Limited | 1000 to 4999 staff | 9.2% | 42.3% |
| Nucleus Holdings Limited | 250 to 499 staff | 14.0% | 59.0% |
| Nuveen Administration Limited | 250 to 499 staff | 25.0% | 30.0% |
| Nwf Group PLC | 1000 to 4999 staff | 12.0% | 18.6% |
| Oakland Primecare Limited | 500 to 999 staff | 3.0% | 74.6% |
| Oc&c Services Limited | 250 to 499 staff | 4.9% | 32.7% |
| Ocado Central Services Limited | 5000 to 19,999 staff | -2.2% | 22.0% |
| Offshore Renewable Energy Catapult | 250 to 499 staff | 10.0% | 20.0% |
| Ofj Topco Ltd | 500 to 999 staff | 1.5% | 56.0% |
| Ogilvy & Mather Group (Holdings) Limited | 500 to 999 staff | 21.2% | 49.5% |
| Oliver Marketing Limited | 500 to 999 staff | 3.2% | 48.0% |
| Omd EMEA Limited | 500 to 999 staff | 12.4% | 45.6% |
| Omnicom Content Experiences Limited | 250 to 499 staff | 2.2% | 48.0% |
| Omnicom Management Limited | 250 to 499 staff | 10.7% | 19.7% |
| Omnicom Media Group UK Limited | 250 to 499 staff | 10.7% | 36.2% |
| Orchid Cellmark Ltd | 250 to 499 staff | 21.0% | 43.0% |
| Ordnance Survey Limited | 1000 to 4999 staff | 6.3% | 26.0% |
| Ove Arup & Partners International Limited | 5000 to 19,999 staff | 13.2% | 31.3% |
| Oxford Archaeology Limited | 250 to 499 staff | 0.0% | 46.0% |
| Oxford Biomedica (UK) Limited | 500 to 999 staff | 1.7% | 51.4% |
| Oxford Economics Limited | 250 to 499 staff | 6.8% | 21.4% |
| Oxford Nanopore Technologies PLC | 500 to 999 staff | 20.6% | 31.8% |
| P. D. Hook (Group) Limited | Less than 250 staff | 39.0% | 38.0% |
| Pa Holdings Limited | 1000 to 4999 staff | 24.6% | 20.0% |
| Palladium International Limited | 250 to 499 staff | 2.5% | 52.8% |
| Parasol Limited | 5000 to 19,999 staff | 18.2% | 39.6% |
| Parexel International Limited | 1000 to 4999 staff | 21.1% | 59.2% |
| Parkdean Resorts UK Limited | 5000 to 19,999 staff | 1.1% | 42.7% |
| Partner Retail Services Limited | 250 to 499 staff | 2.0% | 25.8% |
| Pax8 UK Limited | 250 to 499 staff | 17.7% | 26.2% |
| Payme Ltd | 1000 to 4999 staff | -7.9% | 23.7% |
| Payplan Limited | 250 to 499 staff | 0.0% | 72.9% |
| Pdsa | 1000 to 4999 staff | 14.7% | 80.0% |
| Peel Ports Group Limited | 1000 to 4999 staff | 2.0% | 12.0% |
| Pegasus Planning Group Limited | 250 to 499 staff | 25.9% | 34.8% |
| Pell Frischmann Consultants Limited | 500 to 999 staff | 25.8% | 14.0% |
| Pendragon Management Services Limited | 500 to 999 staff | 54.9% | 41.6% |
| Peninsula Business Services Limited | 500 to 999 staff | 18.1% | 27.0% |
| People Paye Limited | 1000 to 4999 staff | 9.5% | 67.3% |
| People Umbrella Limited | 1000 to 4999 staff | 10.3% | 65.4% |
| Peoplescout Limited | Less than 250 staff | 11.3% | 47.0% |
| Perkinelmer Aes (UK) Limited | 250 to 499 staff | 17.4% | 30.0% |
| Peugeot Citroen Automobiles UK Limited | 250 to 499 staff | 11.8% | 29.4% |
| Pfizer R&d UK Limited | 500 to 999 staff | 5.3% | 56.0% |
| Pharmaron UK Limited | 500 to 999 staff | 15.4% | 29.5% |
| Phd International Limited | 250 to 499 staff | 24.6% | 40.8% |
| Phd Media Limited | 250 to 499 staff | -8.6% | 47.7% |
| Pick Everard | 500 to 999 staff | 31.3% | 16.2% |
| Pinewood Technologies Group Limited | 250 to 499 staff | 16.3% | 19.7% |
| Places For People Group Limited | 1000 to 4999 staff | 14.4% | 43.5% |
| Plastic Omnium Limited | 500 to 999 staff | 11.0% | 9.0% |
| Please Hold (UK) Limited | 500 to 999 staff | 6.4% | 24.0% |
| Pmi Global Studio Limited | 250 to 499 staff | 8.2% | 35.4% |
| Pod Staffing Limited | 500 to 999 staff | 4.2% | 41.2% |
| Ponticelli United Kingdom Limited | 250 to 499 staff | 27.5% | 5.7% |
| Populous Limited | 250 to 499 staff | 12.0% | 30.0% |
| Power Electrics (Bristol) Limited | 250 to 499 staff | 17.4% | 10.9% |
| Powerforce Field Marketing And Retail Services Limited | 250 to 499 staff | 0.0% | 39.8% |
| Ppd Global Ltd | 1000 to 4999 staff | 0.6% | 65.7% |
| Premier Foods Group Services Limited | 250 to 499 staff | 8.1% | 33.8% |
| Primetals Technologies, Limited | 250 to 499 staff | 24.1% | 12.5% |
| Principle Services Holdings Limited | 1000 to 4999 staff | 0.4% | 42.6% |
| Proav Limited | 500 to 999 staff | 17.0% | 11.7% |
| Procter & Gamble Technical Centres Limited | 1000 to 4999 staff | 8.4% | 46.4% |
| Procter & Gamble UK | 500 to 999 staff | 7.9% | 56.9% |
| Product Perceptions Limited | 250 to 499 staff | 0.0% | 84.0% |
| Proforce Security Services Limited | 250 to 499 staff | 0.0% | 8.8% |
| Program Planning Professionals Limited | 250 to 499 staff | 5.0% | 19.5% |
| Proximo Holdings Limited | 250 to 499 staff | -1.1% | 42.0% |
| Publicis Healthcare Communications Group Limited | 250 to 499 staff | 22.4% | 62.5% |
| Publicis Limited | 250 to 499 staff | 19.1% | 48.5% |
| Punch Taverns Limited | 250 to 499 staff | 44.0% | 23.0% |
| Purcell Architecture Limited | 250 to 499 staff | 10.1% | 35.2% |
| Qbe Management Services (UK) Limited | 1000 to 4999 staff | 22.8% | 33.4% |
| Qiagen Manchester Limited | Less than 250 staff | 12.0% | 52.0% |
| Qinetiq Limited | 5000 to 19,999 staff | 8.5% | 19.8% |
| Qualasept Pharmaxo Holdings Limited | 250 to 499 staff | -1.0% | 55.0% |
| Quantuma Advisory Limited | 250 to 499 staff | 28.0% | 27.0% |
| Quest Global Engineering Limited | Less than 250 staff | 18.5% | 5.0% |
| Quick Release (Automotive) Limited | Less than 250 staff | 1.4% | 22.4% |
| Quotient Sciences Limited | 500 to 999 staff | 12.2% | 53.6% |
| Radstock Co-Operative Society Ltd. | 250 to 499 staff | 5.1% | 29.7% |
| Ramboll UK Limited | 1000 to 4999 staff | 19.4% | 22.0% |
| Rapp Limited | 250 to 499 staff | 7.7% | 42.7% |
| Reach Shared Services Limited | 1000 to 4999 staff | 7.7% | 34.2% |
| Reading Scientific Services Limited | 250 to 499 staff | 1.6% | 48.0% |
| Real Chemistry UK Ltd | 250 to 499 staff | 18.0% | 64.0% |
| Rebellion Group Ltd | 500 to 999 staff | 1.2% | 9.1% |
| Reckitt Benckiser Corporate Services Limited | 1000 to 4999 staff | 13.3% | 41.6% |
| Reckitt Benckiser Health Limited | 500 to 999 staff | 14.6% | 47.3% |
| Red Engineering Design Limited | 250 to 499 staff | 26.0% | 15.0% |
| Regeneron UK Limited | 250 to 499 staff | 9.4% | 56.5% |
| Renesas Design (UK) Limited | 250 to 499 staff | 17.2% | 19.0% |
| Resource Experience Limited | 1000 to 4999 staff | 0.0% | 48.7% |
| Rgis Inventory Specialists Limited | 1000 to 4999 staff | 0.0% | 14.2% |
| Ricoh Europe PLC | 500 to 999 staff | 8.1% | 24.5% |
| Rider Levett Bucknall UK Limited | 1000 to 4999 staff | 22.8% | 18.9% |
| Rina Tech UK Limited | 250 to 499 staff | 22.0% | 20.0% |
| Rio Tinto London Limited | 250 to 499 staff | 25.8% | 31.0% |
| Rm Property And Facilities Solutions Limited | 1000 to 4999 staff | 6.0% | 12.0% |
| Roadchef Limited | 250 to 499 staff | 10.2% | 37.6% |
| Robert Bird & Partners Limited | 250 to 499 staff | 12.0% | 17.0% |
| Roche Diagnostics Limited | 500 to 999 staff | -2.5% | 44.0% |
| Rochvilles & Co. Accountants Ltd | Less than 250 staff | 50.0% | 50.0% |
| Rolls-Royce Smr Limited | 500 to 999 staff | 10.4% | 18.5% |
| Roslin Cell Therapies Limited | 250 to 499 staff | 6.2% | 47.0% |
| Rothamsted Research Limited | 250 to 499 staff | 10.3% | 28.6% |
| Rs Group PLC | 500 to 999 staff | 29.7% | 37.7% |
| Rsk Adas Limited | 250 to 499 staff | 13.2% | 33.7% |
| Rsk Group Limited | 500 to 999 staff | 24.7% | 39.4% |
| Rullion Limited | Less than 250 staff | 28.5% | 44.0% |
| Russell Reynolds Associates Limited | 250 to 499 staff | 44.0% | 48.0% |
| Ryan Property Tax Services UK Limited | 250 to 499 staff | 28.0% | 7.8% |
| Ryan Specialty Corporate Services Limited | 250 to 499 staff | 48.7% | 11.9% |
| Ryder Architecture Limited | 250 to 499 staff | 17.3% | 28.9% |
| Saatchi & Saatchi Group Ltd | 250 to 499 staff | 20.8% | 53.6% |
| Safeguard World International Holdings Limited | 250 to 499 staff | 22.8% | 37.0% |
| Saga Group Limited | 250 to 499 staff | -0.3% | 49.2% |
| Saga PLC | 1000 to 4999 staff | 9.0% | 41.4% |
| Saint-Gobain Limited | 250 to 499 staff | 31.8% | 32.5% |
| Sam Sensory And Consumer Research UK Limited | 250 to 499 staff | 0.0% | 95.0% |
| Saria Limited | 500 to 999 staff | 11.4% | 13.0% |
| Schlumberger Oilfield UK Limited | 1000 to 4999 staff | 8.6% | 24.8% |
| Schroder Corporate Services Limited | 250 to 499 staff | 9.2% | 34.8% |
| Scottish Power UK PLC | 500 to 999 staff | 12.7% | 42.0% |
| Sdl Surveying Limited | 250 to 499 staff | 47.0% | 16.0% |
| Sepura Limited | 250 to 499 staff | 20.6% | 7.6% |
| Seqirus UK Limited | 250 to 499 staff | 36.1% | 50.0% |
| Serco Limited | 20,000 or more staff | 4.9% | 43.4% |
| Servicemaster Limited | 500 to 999 staff | 0.0% | 63.8% |
| Sg Umbrella Limited | 500 to 999 staff | 11.7% | 19.0% |
| Sgs United Kingdom Limited | 1000 to 4999 staff | 9.9% | 29.3% |
| Shaw Gibbs Limited | 250 to 499 staff | 13.9% | 53.0% |
| Sheppard Robson People Limited | 250 to 499 staff | 11.6% | 40.0% |
| Shield Service Group Limited | 250 to 499 staff | -0.1% | 69.0% |
| Shl Group Limited | 250 to 499 staff | 10.4% | 46.0% |
| Shopper Media Group Ltd | 250 to 499 staff | 1.3% | 63.0% |
| Sidley Austin LLP | 250 to 499 staff | 59.3% | 47.0% |
| Slalom Consulting Limited | 250 to 499 staff | 17.7% | 23.0% |
| Slater And Gordon UK Limited | 500 to 999 staff | 19.2% | 54.5% |
| Slr Consulting Limited | 1000 to 4999 staff | 22.2% | 24.9% |
| Smith & Nephew UK Limited | 250 to 499 staff | 6.8% | 43.0% |
| Smiths Group PLC | Less than 250 staff | -4.6% | 32.1% |
| Sms Energy Services Limited | Less than 250 staff | 30.8% | 25.0% |
| Snows Business Holdings Limited | 1000 to 4999 staff | 0.1% | 9.0% |
| Socotec UK Limited | 1000 to 4999 staff | 14.7% | 20.2% |
| Sodexo Limited | 20,000 or more staff | 9.8% | 43.0% |
| Sodexo Live UK Limited | 1000 to 4999 staff | 7.2% | 39.0% |
| Sonomatic Limited | 250 to 499 staff | 20.9% | 13.0% |
| Spark Foundry Limited | 250 to 499 staff | 8.7% | 57.7% |
| Sruc | 1000 to 4999 staff | 14.7% | 51.8% |
| Sse PLC | 5000 to 19,999 staff | 11.5% | 23.2% |
| Stanley Black & Decker UK Limited | 1000 to 4999 staff | 26.2% | 26.1% |
| Star Lizard Consulting Limited | 250 to 499 staff | 1.0% | 6.0% |
| Starcom Worldwide Limited | 500 to 999 staff | 9.7% | 49.6% |
| Steer Davies & Gleave Limited | Less than 250 staff | 11.0% | 30.6% |
| Stephenson Harwood Services Limited | 500 to 999 staff | 33.2% | 52.9% |
| Sterling Solutions Umbrella Ltd | 500 to 999 staff | -13.2% | 8.3% |
| Sthree Management Services Limited | 250 to 499 staff | 29.8% | 49.4% |
| Strat7 Limited | 250 to 499 staff | 18.8% | 51.0% |
| Strevens Vehicles Holdings Limited | 500 to 999 staff | 24.5% | 6.8% |
| Stride Treglown Limited | 250 to 499 staff | 16.0% | 22.1% |
| Sustainable Energy First Limited | 250 to 499 staff | 4.6% | 33.6% |
| Sweco UK Limited | 500 to 999 staff | 22.0% | 19.7% |
| Swift Employment Solutions Limited | 1000 to 4999 staff | 70.2% | 59.5% |
| Switalskis Solicitors Limited | 250 to 499 staff | 23.0% | 73.0% |
| Sygnature Discovery Limited | 500 to 999 staff | 8.1% | 36.0% |
| T P Bennett Services Limited | 250 to 499 staff | 6.5% | 48.2% |
| Talbots Law Ltd | 250 to 499 staff | 29.2% | 58.9% |
| Talon Outdoor Limited | 250 to 499 staff | 18.1% | 58.0% |
| Taylor Rose Limited | 500 to 999 staff | 22.8% | 61.9% |
| Tclarke Services Limited | 500 to 999 staff | 50.0% | 3.0% |
| Td4 Brands Limited | 250 to 499 staff | 0.0% | 60.7% |
| Teneo Financial Advisory Limited | 250 to 499 staff | 25.1% | 18.0% |
| Tersus Consultancy Limited | 250 to 499 staff | 30.0% | 7.5% |
| Tetra Tech Consulting Limited | 1000 to 4999 staff | 17.7% | 22.3% |
| Tetra Tech Environmental Management Limited | 1000 to 4999 staff | -15.7% | 32.9% |
| Tetra Tech Limited | 1000 to 4999 staff | 25.3% | 15.8% |
| Tg Jones Retail Holdings Limited | 5000 to 19,999 staff | 0.0% | 52.5% |
| Thatcham Research | 250 to 499 staff | 0.1% | 23.1% |
| The Alan Turing Institute | 250 to 499 staff | 4.0% | 40.6% |
| The Anderson Group Ltd | 250 to 499 staff | 11.9% | 11.7% |
| The Babraham Institute | 250 to 499 staff | 9.7% | 47.5% |
| The Big Table Group Limited | 5000 to 19,999 staff | 1.7% | 34.0% |
| The Binding Site Group Limited | 500 to 999 staff | 9.6% | 40.0% |
| The British Standards Institution | 500 to 999 staff | 11.5% | 45.0% |
| The Capital Markets Company (UK) Limited | 1000 to 4999 staff | 10.9% | 26.9% |
| The Carbon Trust | 250 to 499 staff | 7.4% | 42.0% |
| The Energy Saving Trust Limited | 500 to 999 staff | 12.4% | 51.0% |
| The Fertility Partnership Ltd | 250 to 499 staff | 38.7% | 69.9% |
| The Financial Reporting Council Limited | 250 to 499 staff | 5.3% | 48.7% |
| The James Hutton Institute | 500 to 999 staff | 8.7% | 38.0% |
| The Kantar Group Limited | 250 to 499 staff | 11.2% | 42.0% |
| The King's Household | 500 to 999 staff | -7.4% | 54.3% |
| The National Youth Advocacy Service | 250 to 499 staff | 2.4% | 81.0% |
| The Natural Power Consultants Limited | 250 to 499 staff | 18.0% | 22.0% |
| The Pirbright Institute | 250 to 499 staff | 7.0% | 35.0% |
| The Ralph Veterinary Referral Centre PLC | 250 to 499 staff | 36.0% | 72.0% |
| The Rank Group PLC | 5000 to 19,999 staff | 3.6% | 36.7% |
| The Royal College of Surgeons of England | 250 to 499 staff | 4.2% | 63.0% |
| The University Of Westminster | 1000 to 4999 staff | 2.5% | 51.0% |
| The Waste And Resources Action Programme | 250 to 499 staff | 12.1% | 59.0% |
| The&partners London Limited | 250 to 499 staff | 10.0% | 37.5% |
| Third Bridge Group Limited | 250 to 499 staff | 5.0% | 38.3% |
| Thomas Miller & Co. Limited | 500 to 999 staff | 41.3% | 20.9% |
| Thomson Reuters (Professional) UK Limited | 1000 to 4999 staff | 13.4% | 47.0% |
| Tiso Group Limited | 250 to 499 staff | -0.5% | 38.6% |
| Together Financial Services Limited | 500 to 999 staff | 16.0% | 28.0% |
| Tokamak Energy Ltd | 250 to 499 staff | 3.9% | 21.9% |
| Towers Watson Limited | 1000 to 4999 staff | 23.2% | 36.5% |
| Transunion Information Group Limited | 500 to 999 staff | 22.7% | 26.0% |
| Travail Employment Group Limited | 250 to 499 staff | -1.5% | 40.0% |
| Trescal Limited | 250 to 499 staff | 1.1% | 21.0% |
| Trinitybridge Holdings Limited | 500 to 999 staff | 33.0% | 20.5% |
| Trust Alliance Group Limited | 250 to 499 staff | 5.2% | 39.5% |
| Trust Payments Ltd | 250 to 499 staff | 20.1% | 14.9% |
| Tsa Riley Limited | 250 to 499 staff | 33.1% | 8.0% |
| Tsl Limited | 250 to 499 staff | 37.8% | 4.9% |
| Ttp PLC | 250 to 499 staff | 39.1% | 5.3% |
| Turley Associates Ltd | 250 to 499 staff | 23.7% | 29.0% |
| Turner & Townsend PJM UK Limited | 500 to 999 staff | 31.5% | 13.3% |
| Tuv Rheinland Solutions Limited | 250 to 499 staff | 41.4% | 10.1% |
| Tuv Sud Limited | 500 to 999 staff | 21.8% | 19.4% |
| UK Biobank Limited | 250 to 499 staff | 19.9% | 41.8% |
| UK Shared Business Services Limited | 500 to 999 staff | 18.9% | 47.2% |
| Ul Vs Limited | 250 to 499 staff | 14.4% | 20.0% |
| Ultimate Products PLC | 250 to 499 staff | 2.5% | 46.7% |
| Umbrella-Company Limited | 5000 to 19,999 staff | 2.9% | 42.0% |
| Unilever U.K. Central Resources Limited | 1000 to 4999 staff | 7.0% | 56.0% |
| United Kingdom Accreditation Service | 250 to 499 staff | 9.7% | 50.0% |
| United Kingdom National Nuclear Laboratory Limited | 1000 to 4999 staff | 8.3% | 26.0% |
| United Kingdom Research and Innovation | 5000 to 19,999 staff | 7.0% | 39.0% |
| United Utilities Group PLC | 5000 to 19,999 staff | 13.0% | 34.4% |
| Universal Music Holdings Limited | 1000 to 4999 staff | 25.2% | 30.0% |
| University Of Derby | 1000 to 4999 staff | 10.5% | 49.5% |
| Utac UK Ltd | 250 to 499 staff | 17.4% | 10.1% |
| Utilitec Services Limited | 500 to 999 staff | 1.7% | 16.9% |
| Valpak Limited | 250 to 499 staff | 0.1% | 51.6% |
| Vegner Group Limited | 500 to 999 staff | 5.9% | 55.0% |
| Vercity Social Infrastructure (UK) Limited | 250 to 499 staff | 31.0% | 28.0% |
| Verian Group UK Limited | 250 to 499 staff | 12.9% | 50.0% |
| Veriforce Holdings Limited | 500 to 999 staff | 19.0% | 36.0% |
| Vertex Pharmaceuticals (Europe) Limited | 500 to 999 staff | 9.4% | 47.6% |
| Vertical Aerospace Group Ltd | 250 to 499 staff | 17.3% | 14.6% |
| Vetpartners Limited | 500 to 999 staff | 26.2% | 48.3% |
| Vetpartners Practices II Limited | 500 to 999 staff | 49.7% | 72.4% |
| Vetpartners Practices Limited | 1000 to 4999 staff | 45.6% | 73.8% |
| Vets Now Limited | 1000 to 4999 staff | 35.4% | 77.0% |
| Vibe Recruit Limited | 1000 to 4999 staff | 19.0% | 46.0% |
| Virgin Active International Limited | 1000 to 4999 staff | 4.1% | 43.8% |
| Virgin Atlantic Limited | 5000 to 19,999 staff | 28.0% | 30.7% |
| Vml(UK) Limited | 500 to 999 staff | 23.9% | 40.4% |
| Volkerservices Limited | 250 to 499 staff | 29.8% | 33.3% |
| Vue Services Limited | 250 to 499 staff | 21.2% | 32.7% |
| Vwr Lab Services Limited | 250 to 499 staff | 0.0% | 55.0% |
| Vwv Legal Services Limited | 500 to 999 staff | 17.6% | 66.4% |
| Walk Wheel Cycle Trust | 500 to 999 staff | 2.1% | 51.0% |
| Walker Morris Resources Limited | 250 to 499 staff | 38.6% | 57.7% |
| Warringtonfire Testing And Certification Limited | 250 to 499 staff | 33.2% | 17.6% |
| Watson Ramsbottom Limited | 250 to 499 staff | 6.8% | 80.0% |
| Wavemaker Limited | 250 to 499 staff | 9.2% | 53.0% |
| Wayve Technologies Ltd | 250 to 499 staff | 3.3% | 18.0% |
| Webmart Limited | Less than 250 staff | 8.9% | 60.0% |
| Wells & Co (Bedford) Limited | 500 to 999 staff | 10.0% | 33.6% |
| Wessex Archaeology Limited | 250 to 499 staff | 2.5% | 48.0% |
| Westinghouse Electric UK Holdings Limited | 250 to 499 staff | -1.2% | 35.7% |
| Westway Veterinary Centres Limited | 250 to 499 staff | 24.8% | 86.2% |
| Wilkin Chapman Group Ltd | 250 to 499 staff | 23.1% | 63.8% |
| Willmore Iles Architects Limited | Less than 250 staff | 19.0% | 25.0% |
| Willowbrook Healthcare Limited | 1000 to 4999 staff | 2.5% | 82.0% |
| Winn Solicitors Limited | 500 to 999 staff | 4.9% | 58.7% |
| Worknest Limited | 250 to 499 staff | 17.2% | 39.0% |
| Workwell Solutions Limited | 5000 to 19,999 staff | -26.0% | 22.8% |
| Worley Europe Ltd | 500 to 999 staff | 30.0% | 16.9% |
| Wpp 2005 Limited | 500 to 999 staff | 15.1% | 36.7% |
| Wpp Brands (UK) Limited | 250 to 499 staff | 9.0% | 55.2% |
| Wpp Media UK Limited | 1000 to 4999 staff | 9.1% | 45.8% |
| Wpp Production Limited | 1000 to 4999 staff | 14.4% | 42.3% |
| Wsp UK Limited | 5000 to 19,999 staff | 22.1% | 20.1% |
| Wunderman Thompson Commerce UK Limited | 250 to 499 staff | 25.0% | 19.8% |
| Xeinadin South East Limited | 250 to 499 staff | 6.9% | 41.9% |
| Xinlung Group Limited | 250 to 499 staff | 21.0% | 64.0% |
| Xodus Group Limited | 250 to 499 staff | 35.6% | 25.0% |
| Xps Administration Limited | 1000 to 4999 staff | 8.7% | 52.0% |
| Xps Pensions Consulting Limited | 500 to 999 staff | 28.2% | 35.0% |
| Xps Pensions Limited | 250 to 499 staff | 17.6% | 29.0% |
| Yell Sales Limited | 250 to 499 staff | 11.2% | 37.0% |
| Yesss (A) Electrical Ltd | 250 to 499 staff | 4.0% | 5.0% |
| Yesss (B) Electrical Ltd | 250 to 499 staff | -3.0% | 7.5% |
| Yougov PLC | 250 to 499 staff | 8.0% | 47.0% |
| Zenith International (Media) Limited | 250 to 499 staff | 16.0% | 48.6% |
| Zenith UK (Media) Limited | 500 to 999 staff | 6.8% | 47.4% |
| Zha Architects Limited | 250 to 499 staff | 14.5% | 31.0% |