| NHS SHARED BUSINESS SERVICES LIMITEDNew | Other | 8 | £1.0bn | 54.8% | 2025-11-11 |
| Warwick District CouncilNew | Other | 18 | £315m | 17.3% | 2025-10-16 |
| Government Commercial AgencyNew | Other | 2 | £250m | 13.7% | 2026-02-13 |
| NHS London Procurement Partnership (Hosted by Guy's and St Thomas' NHS FT) | Other | 2 | £111m | 6.1% | 2021-11-01 |
| The Association of North East Councils LimitedNew | Other | 1 | £66m | 3.6% | 2026-04-09 |
| Crown Commercial Service | Other | 1 | £60m | 3.3% | 2020-12-22 |
| Procurement for HousingNew | Other | 5 | £7m | 0.4% | 2025-07-01 |
| Hampshire County Council | Other | 8 | £3m | 0.2% | 2026-01-05 |
| CRESCENT PURCHASING LIMITED | Other | 2 | £3m | 0.1% | 2022-02-24 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 10 | £3m | 0.1% | 2026-01-09 |
| Nottingham Trent UniversityNew | Other | 2 | £2m | 0.1% | 2026-02-27 |
| YORK TEACHING HOSPITAL NHS FOUNDATION TRUST | Other | 2 | £1m | 0.1% | 2019-06-25 |
| George Eliot Hospital | Other | 1 | £800k | 0.0% | 2017-04-03 |
| Secretary of State for Health and Social Care acting as part of the Crown through UK Health Security AgencyNew | Other | 3 | £696k | 0.0% | 2025-10-27 |
| Frimley Health NHS Foundation Trust | Other | 2 | £450k | 0.0% | 2024-08-06 |
| UK Health Security AgencyNew | Other | 3 | £304k | 0.0% | 2025-06-19 |
| Royal Papworth Hospital NHS Foundation TrustNew | Other | 2 | £250k | 0.0% | 2024-12-03 |
| United Lincolnshire Hospitals NHS Trust | Other | 1 | £250k | 0.0% | 2018-02-01 |
| West Hertfordshire Hospitals NHS TrustNew | Other | 1 | £246k | 0.0% | 2025-04-01 |
| DEFRA | Other | 1 | £194k | 0.0% | 2019-02-11 |
| United Lincolnshire Teaching Hospitals NHS TrustNew | Other | 3 | £162k | 0.0% | 2025-12-17 |
| Platform Housing GroupNew | Other | 1 | £134k | 0.0% | 2025-12-17 |
| University Hospitals Sussex NHS Foundation TrustNew | Other | 1 | £102k | 0.0% | 2025-12-18 |
| CALDERDALE AND HUDDERSFIELD SOLUTIONS LTD | Other | 1 | £54k | 0.0% | 2022-09-01 |
| Chelsea & Westminster Hospital and The Royal Marsden NHS Foundation Trusts | Other | 1 | £28k | 0.0% | 2021-06-10 |
| Newcastle City Council | Other | 4 | £27k | 0.0% | 2023-06-29 |
| Historic England | Other | 1 | £27k | 0.0% | 2024-05-20 |
| Cheshire West and Chester CouncilNew | Other | 1 | £23k | 0.0% | 2025-01-21 |
| Middlesbrough CouncilNew | Other | 2 | £18k | 0.0% | 2025-12-03 |
| The Queen Elizabeth Hospital King's Lynn NHS Foundation Trust | Other | 1 | £17k | 0.0% | 2017-03-16 |
| Tyne Coast CollegeNew | Other | 1 | £9k | 0.0% | 2024-09-25 |
| Stoke-on-Trent City Council | Other | 1 | £8k | 0.0% | 2024-05-20 |
| HUMBER TEACHING NHS FOUNDATION TRUST | Other | 2 | £0k | 0.0% | |
| Torbay Council | Other | 3 | £0k | 0.0% | |
| Kent Community Health NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Bristol City Council | Other | 1 | £0k | 0.0% | |
| Welsh Government | Other | 1 | £0k | 0.0% | |
| AGRICULTURE AND HORTICULTURE DEVELOPMENT BOARD | Other | 2 | £0k | 0.0% | |
| Govia Thameslink Railway Ltd | Other | 1 | £0k | 0.0% | |
| Guy's and St Thomas' NHS Foundation Trust | Other | 5 | £0k | 0.0% | |
| City & County of Swansea | Other | 7 | £0k | 0.0% | |
| South Western Ambulance Service NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| HealthTrust Europe LLP (HTE) acting on behalf of | Other | 1 | £0k | 0.0% | |
| Durham County Council | Other | 1 | £0k | 0.0% | |
| West Lothian Council | Other | 1 | £0k | 0.0% | |
| QE Facilities | Other | 1 | £0k | 0.0% | |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 1 | £0k | 0.0% | |
| Scottish Government | Other | 1 | £0k | 0.0% | |
| Office of the Sussex Police & Crime Commissioner | Other | 1 | £0k | 0.0% | |
| The Rotherham NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| NHS London Procurement Partnership | Other | 2 | £0k | 0.0% | |
| Public Sector | Other | 2 | £0k | 0.0% | |