Transport and storage ยท 250 to 499 staff
Iron Mountain (UK) PLC
Company number 01478540 ยท Last year's median gap 37.7%
Key figures
30.6%median hourly pay gap (sector median 5.0%)
33.3%of the top pay quartile are women
16.3%median bonus gap
| Measure | This employer | Sector median |
|---|---|---|
| Median hourly pay gap how much less women earn per hour than men, at the median | 30.6% | 5.0% |
| Mean hourly pay gap | 13.6% | 6.7% |
| Median bonus gap | 16.3% | 8.4% |
| Women paid a bonus | 66.0% | 34.8% |
| Men paid a bonus | 80.0% | 39.4% |
| Women in the top pay quartile | 33.3% | 14.3% |
| Women in the lowest pay quartile | 63.3% | 26.1% |
| Women in the workforce (from quartiles) | 42.3% | 18.8% |
A positive gap means men are paid more; a negative gap means women are. Sector: Transport and storage (410 employers). The employer's own statement
Source: UK Gender Pay Gap Service, 2025-26 reports (open data, Open Government Licence v3.0). Every employer with 250 or more staff reports its gender pay gap each year. Compiled by The Hardest Market.