| Lancashire Constabulary | Other | 2 | £627k | 11.7% | 2025-08-07 |
| Karbon HomesNew | Other | 2 | £403k | 7.5% | 2025-07-11 |
| Nottinghamshire County CouncilNew | Other | 1 | £384k | 7.2% | 2024-07-26 |
| H M REVENUE & CUSTOMS | Other | 1 | £311k | 5.8% | 2021-11-22 |
| Southern HousingNew | Other | 1 | £274k | 5.1% | 2026-02-13 |
| Frimley Health NHS Foundation Trust | Other | 1 | £228k | 4.3% | 2021-05-03 |
| Northumbria Healthcare NHS Foundation TrustNew | Other | 1 | £214k | 4.0% | 2026-05-21 |
| Plymouth Community HomesNew | Other | 1 | £211k | 4.0% | 2025-02-21 |
| Gateshead Council | Other | 2 | £205k | 3.8% | 2021-12-21 |
| BBC (British Broadcasting Corporation) | Other | 2 | £190k | 3.6% | 2019-05-20 |
| City of Doncaster CouncilNew | Other | 1 | £186k | 3.5% | 2024-12-23 |
| whgNew | Other | 1 | £185k | 3.5% | 2025-12-03 |
| Northumbria Police | Other | 2 | £161k | 3.0% | 2025-02-17 |
| New College SwindonNew | Other | 1 | £136k | 2.5% | 2026-01-16 |
| Optivo | Other | 2 | £135k | 2.5% | 2022-09-15 |
| GREAT BRITISH ENERGY - NUCLEARNew | Other | 1 | £122k | 2.3% | 2026-03-12 |
| UK Health Security Agency | Other | 1 | £117k | 2.2% | 2023-12-14 |
| The Arts Council of EnglandNew | Other | 1 | £100k | 1.9% | 2025-01-29 |
| Sport EnglandNew | Other | 1 | £96k | 1.8% | 2025-09-01 |
| Scape Group LimitedNew | Other | 1 | £95k | 1.8% | 2024-07-30 |
| N H S Shared Business Services | Other | 1 | £83k | 1.5% | 2024-02-26 |
| DIGITAL CATAPULT SERVICES LIMITED | Other | 1 | £74k | 1.4% | 2020-04-20 |
| NHS England | Other | 1 | £72k | 1.4% | 2022-03-16 |
| HEALTH DATA RESEARCH UKNew | Other | 1 | £68k | 1.3% | 2025-02-18 |
| Scape Group Limited (trading as SCAPE) | Other | 1 | £65k | 1.2% | 2021-08-30 |
| National Highways | Other | 2 | £63k | 1.2% | 2024-04-15 |
| National Audit Office | Other | 1 | £59k | 1.1% | 2023-04-06 |
| Hampshire County CouncilNew | Other | 1 | £58k | 1.1% | 2025-12-16 |
| UK SHARED BUSINESS SERVICES LIMITEDNew | Other | 1 | £50k | 0.9% | 2024-10-11 |
| Connect Housing Association LimitedNew | Other | 1 | £47k | 0.9% | 2025-07-15 |
| Citizen Housing Group LtdNew | Other | 1 | £45k | 0.8% | 2024-09-30 |
| Highways Agency | Other | 1 | £43k | 0.8% | 2016-06-15 |
| Leeds and York Partnership NHS Foundation Trust | Other | 1 | £42k | 0.8% | 2023-09-27 |
| Thirteen Housing Group Limited | Other | 1 | £42k | 0.8% | 2023-06-30 |
| First Ark Group | Other | 1 | £40k | 0.7% | 2018-12-11 |
| Public Health England | Other | 1 | £39k | 0.7% | 2018-10-25 |
| CHPNew | Other | 1 | £29k | 0.5% | 2024-12-04 |
| National Savings & Investments | Other | 1 | £20k | 0.4% | 2016-12-08 |
| Crown Commercial Service | Other | 2 | £13k | 0.2% | 2017-10-04 |
| UK Hydrographic Office | Other | 1 | £8k | 0.2% | 2023-03-12 |
| ClwydAlyn Housing | Other | 1 | £0k | 0.0% | |
| PLYMOUTH COMMUNITY HOMES LIMITED | Other | 1 | £0k | 0.0% | |
| The Mayor and Commonalty and Citizens of the City of London | Other | 1 | £0k | 0.0% | |
| University of Bedfordshire | Other | 1 | £0k | 0.0% | |
| Pobl Group Ltd | Other | 1 | £0k | 0.0% | |
| Livv Housing Group | Other | 1 | £0k | 0.0% | |