| Ambulance Radio Programme (ARP) | Other | 3 | £19m | 13.0% | 2025-05-01 |
| YPONew | Other | 2 | £19m | 13.0% | 2025-03-05 |
| Solent NHS Trust | Other | 2 | £13m | 8.9% | 2022-07-06 |
| National Employment Savings Trust (NEST) | Other | 1 | £12m | 8.0% | 2023-07-13 |
| STUDENT LOANS COMPANY LIMITED | Other | 3 | £10m | 7.3% | 2025-05-23 |
| Crown Commercial Service | Other | 4 | £9m | 6.1% | 2022-07-27 |
| Lincolnshire County CouncilNew | Other | 1 | £5m | 3.7% | 2026-03-11 |
| Home Office | Other | 5 | £5m | 3.1% | 2025-04-30 |
| Ministry of Justice | Other | 4 | £4m | 3.0% | 2024-04-16 |
| ATAMIS LTD | Other | 1 | £4m | 2.8% | 2021-12-10 |
| Olga Chernick | Other | 1 | £4m | 2.7% | 2020-06-08 |
| Student Loans Company | Other | 3 | £3m | 2.3% | 2023-06-09 |
| NHS Digital | Other | 6 | £3m | 2.3% | 2023-01-06 |
| Department for Transport | Other | 2 | £3m | 2.1% | 2019-07-26 |
| BROMFORD HOUSING GROUP LIMITED | Other | 1 | £2m | 1.6% | 2021-02-11 |
| Department of Health and Social Care (DHSC)New | Other | 1 | £2m | 1.6% | 2024-07-26 |
| N H S Shared Business Services | Other | 2 | £2m | 1.4% | 2025-01-16 |
| Low Carbon Contracts Company Ltd | Other | 3 | £2m | 1.2% | 2021-12-13 |
| Department for Work & Pensions | Other | 9 | £2m | 1.1% | 2025-04-16 |
| Raven Housing Trust Limited | Other | 1 | £1m | 1.0% | 2021-07-31 |
| UNIVERSITY OF SUSSEX(THE) | Other | 2 | £1m | 0.9% | 2023-08-22 |
| NHS England | Other | 3 | £1m | 0.9% | 2024-07-26 |
| NORTH STAR HOUSING GROUP | Other | 1 | £1m | 0.8% | 2020-09-04 |
| Medicines and Healthcare Products Regulatory Agency | Other | 1 | £1m | 0.8% | 2017-04-26 |
| ROYAL HOLLOWAY, UNIVERSITY OF LONDON | Other | 4 | £1m | 0.7% | 2022-07-07 |
| ACCENT HOUSING LIMITED | Other | 1 | £824k | 0.6% | 2017-03-31 |
| Barnet Enfield and Haringey Mental Health Trust | Other | 1 | £778k | 0.5% | 2022-12-23 |
| Food Standards Agency | Other | 1 | £750k | 0.5% | 2022-05-27 |
| Yorkshire Housing | Other | 1 | £721k | 0.5% | 2017-07-03 |
| NSAH (ALLIANCE HOMES) LIMITED | Other | 2 | £709k | 0.5% | 2021-04-26 |
| Department of Health & Social Care | Other | 1 | £686k | 0.5% | 2020-12-09 |
| DEFRA | Other | 1 | £665k | 0.5% | 2021-12-01 |
| FELICIA ANN FOXNew | Other | 1 | £597k | 0.4% | 2025-01-29 |
| Ofsted | Other | 2 | £589k | 0.4% | 2022-02-28 |
| London Ambulance Service NHS TrustNew | Other | 2 | £573k | 0.4% | 2026-01-19 |
| Department for Education | Other | 1 | £558k | 0.4% | 2022-05-31 |
| HM Land Registry | Other | 2 | £548k | 0.4% | 2024-09-03 |
| CPS | Other | 2 | £534k | 0.4% | 2024-03-26 |
| Health Research Authority | Other | 1 | £480k | 0.3% | 2024-05-24 |
| LONDON & PARTNERS LIMITED | Other | 1 | £458k | 0.3% | 2020-04-01 |
| Sovini Ltd | Other | 2 | £450k | 0.3% | 2021-04-07 |
| London Ambulance Service NSH Trust | Other | 1 | £448k | 0.3% | 2019-02-12 |
| Office of Rail and Road | Other | 4 | £318k | 0.2% | 2024-03-31 |
| Ministry of Defence | Other | 1 | £315k | 0.2% | 2022-11-12 |
| Debra Murphy | Other | 1 | £313k | 0.2% | 2022-06-29 |
| Met Office | Other | 4 | £293k | 0.2% | 2023-07-13 |
| UKHSA | Other | 2 | £289k | 0.2% | 2021-12-06 |
| Havant Borough CouncilNew | Other | 2 | £246k | 0.2% | 2025-02-28 |
| Public Health England | Other | 1 | £245k | 0.2% | 2021-05-25 |
| The National Archives | Other | 2 | £202k | 0.1% | 2022-05-19 |
| Royal Holloway and Bedford New College | Other | 1 | £196k | 0.1% | 2021-07-16 |
| UK Health Security Agency | Other | 2 | £194k | 0.1% | 2026-03-27 |
| DfTc - Department for TransportNew | Other | 1 | £183k | 0.1% | 2024-07-19 |
| NHS Arden and Greater East Midlands Commissioning Support Unit | Other | 2 | £155k | 0.1% | 2024-05-30 |
| The Pensions Regulator | Other | 1 | £130k | 0.1% | 2023-04-05 |
| Paradigm Housing Group | Other | 1 | £130k | 0.1% | 2024-03-26 |
| The Charity Commission For England And Wales | Other | 1 | £121k | 0.1% | 2021-08-28 |
| Department of Health and Social Care (T&T) | Other | 2 | £117k | 0.1% | 2021-07-13 |
| Wakefield and District Housing limited | Other | 1 | £103k | 0.1% | 2017-12-08 |
| City of Wolverhampton Council | Other | 1 | £82k | 0.1% | 2019-03-08 |
| West Midlands Fire Service | Other | 2 | £80k | 0.1% | 2025-01-20 |
| The Water Services Regulation Authority | Other | 1 | £78k | 0.1% | 2019-05-02 |
| UK Debt Management Office | Other | 1 | £27k | 0.0% | 2020-08-20 |
| Big Lottery Fund, operating as The National Lottery Community Fund | Other | 2 | £26k | 0.0% | 2017-11-02 |
| Government Digital Service | Other | 1 | £20k | 0.0% | 2016-08-10 |
| H M GOVERNMENT CABINET OFFICE | Other | 1 | £19k | 0.0% | 2016-05-26 |
| Office for National Statistics | Other | 1 | £19k | 0.0% | 2019-03-26 |
| O F W A TNew | Other | 1 | £13k | 0.0% | 2024-08-16 |
| West Midlands Fire and Rescue Authority | Other | 1 | £0k | 0.0% | |
| Surrey and Borders Partnership NHS Foundation Trust on behalf of NHS Commercial Solutions | Other | 6 | £0k | 0.0% | |
| Secretary of State for Health and Social Care acting as part of the Crown through UK Health Security Agency | Other | 1 | £0k | 0.0% | |
| London Stadium 185 | Other | 1 | £0k | 0.0% | |
| Birmingham City University | Other | 1 | £0k | 0.0% | |
| Gentoo Group | Other | 1 | £0k | 0.0% | |
| NHS Commercial Solutions | Other | 1 | £0k | 0.0% | |
| National Museum of the Royal Navy | Other | 1 | £0k | 0.0% | |