Transport and storage ยท 1000 to 4999 staff
Iron Mountain (UK) Services Limited
Company number 08333429 ยท Last year's median gap 9.9%
Iron Mountain (UK) Services Limited, an employer in transport and storage with 1000 to 4999 staff, reported a median hourly gender pay gap of 3.6% for 2025-26, below the sector median of 5.0% (UK Gender Pay Gap Service).
Key figures
3.6%median hourly pay gap (sector median 5.0%)
30.8%of the top pay quartile are women
29.9%median bonus gap
| Measure | This employer | Sector median |
|---|---|---|
| Median hourly pay gap how much less women earn per hour than men, at the median | 3.6% | 5.0% |
| Mean hourly pay gap | 0.9% | 6.7% |
| Median bonus gap | 29.9% | 8.4% |
| Women paid a bonus | 24.0% | 34.8% |
| Men paid a bonus | 23.0% | 39.4% |
| Women in the top pay quartile | 30.8% | 14.3% |
| Women in the lowest pay quartile | 34.8% | 26.1% |
| Women in the workforce (from quartiles) | 31.0% | 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
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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.