| Cabinet Office | Other | 3 | £6m | 35.1% | 2019-07-18 |
| N H S Shared Business Services | Other | 1 | £3m | 17.4% | 2024-01-26 |
| Espo | Other | 19 | £3m | 15.1% | 2021-08-22 |
| Oldham Council | Other | 1 | £2m | 9.6% | 2020-03-13 |
| Department of Health and Social Care (DHSC) | Other | 2 | £623k | 3.6% | 2021-08-19 |
| Devon County Council | Other | 1 | £600k | 3.5% | 2018-06-16 |
| Bristol City Council | Other | 2 | £349k | 2.0% | 2018-11-29 |
| Department for Education | Other | 2 | £336k | 1.9% | 2022-03-21 |
| East Hampshire District Council | Other | 3 | £226k | 1.3% | 2022-07-01 |
| West Lancashire District Council | Other | 1 | £178k | 1.0% | 2019-11-27 |
| Exeter City CouncilNew | Other | 3 | £152k | 0.9% | 2025-02-20 |
| Birmingham City Council | Other | 2 | £145k | 0.8% | 2023-07-21 |
| Central Bedfordshire Council | Other | 2 | £120k | 0.7% | 2022-03-22 |
| West Lancashire Borough Council | Other | 1 | £120k | 0.7% | 2018-11-09 |
| Sefton Council | Other | 2 | £86k | 0.5% | 2016-09-11 |
| Brighton and Hove City Council | Other | 1 | £83k | 0.5% | 2020-07-09 |
| SE Shared Services | Other | 1 | £83k | 0.5% | 2020-07-09 |
| London Fire Commissioner | Other | 1 | £81k | 0.5% | 2020-12-14 |
| Somerset County Council | Other | 1 | £77k | 0.4% | 2020-10-22 |
| City of London Corporation | Other | 1 | £55k | 0.3% | 2022-10-26 |
| London Borough of Sutton | Other | 1 | £54k | 0.3% | 2018-08-01 |
| Office of Rail and Road | Other | 3 | £53k | 0.3% | 2020-07-27 |
| West Suffolk Council | Other | 1 | £52k | 0.3% | 2022-03-17 |
| West Yorkshire Combined Authority | Other | 1 | £48k | 0.3% | 2021-10-27 |
| Mayor's Office for Policing And Crime | Other | 1 | £44k | 0.3% | 2023-02-24 |
| HM Land RegistryNew | Other | 1 | £42k | 0.2% | 2026-05-14 |
| Barnsley Metropolitan Borough Council | Other | 1 | £41k | 0.2% | 2019-02-01 |
| Whittington Health | Other | 1 | £40k | 0.2% | 2024-03-14 |
| HEE | Other | 1 | £39k | 0.2% | 2021-11-24 |
| The National Archives | Other | 2 | £36k | 0.2% | 2019-11-28 |
| Homes England (the name adopted by the Homes and Communities Agency)New | Other | 1 | £35k | 0.2% | 2024-12-23 |
| Gambling CommissionNew | Other | 1 | £35k | 0.2% | 2026-02-11 |
| Peterborough City Council | Other | 1 | £34k | 0.2% | 2023-02-01 |
| Kent Community Health NHS Foundation Trust | Other | 1 | £28k | 0.2% | 2021-03-05 |
| Cambridgeshire County Council | Other | 1 | £27k | 0.2% | 2022-09-15 |
| Health Education England | Other | 1 | £25k | 0.1% | 2019-02-14 |
| Newcastle-under-Lyme Borough Council | Other | 1 | £14k | 0.1% | 2021-03-31 |
| National Archives Public Record Office | Other | 1 | £5k | 0.0% | 2017-03-10 |
| Information Commissioner's OfficeNew | Other | 2 | £0k | 0.0% | 2025-09-05 |
| Crown Commercial Service | Other | 1 | £0k | 0.0% | 2019-02-20 |
| Sandwell Metropolitan Borough Council | Other | 1 | £0k | 0.0% | 2016-11-25 |
| NHS Commissioning Board | Other | 1 | £0k | 0.0% | 2016-10-07 |
| Mid and South Essex NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Waltham invoice address | Other | 1 | £0k | 0.0% | |
| Westmorland and Furness Council | Other | 1 | £0k | 0.0% | |
| UNITED KINGDOM ANTI-DOPING LIMITED | Other | 1 | £0k | 0.0% | |