| Government Commercial AgencyNew | Other | 2 | £1.2bn | 49.2% | 2025-10-13 |
| NHS SHARED BUSINESS SERVICES LIMITEDNew | Other | 9 | £1.0bn | 41.0% | 2025-11-11 |
| NHS London Procurement Partnership (Hosted by Guy's and St Thomas' NHS FT) | Other | 2 | £111m | 4.6% | 2021-11-01 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 7 | £58m | 2.4% | 2025-10-16 |
| NHS England | Other | 1 | £28m | 1.2% | 2023-03-28 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £12m | 0.5% | 2020-09-07 |
| N H S Shared Business Services | Other | 1 | £10m | 0.4% | 2023-12-13 |
| NHS Shared Business Services Ltd (NHS SBS) | Other | 1 | £8m | 0.3% | 2021-10-14 |
| Manchester University NHS Foundation Trust | Other | 1 | £5m | 0.2% | 2023-06-14 |
| Hull University Teaching Hospitals NHS Trust | Other | 2 | £1m | 0.1% | 2021-11-26 |
| The Queen Elizabeth Hospital King's Lynn NHS Foundation Trust | Other | 7 | £1m | 0.0% | 2024-02-21 |
| Partners Procurement Service | Other | 1 | £1m | 0.0% | 2019-01-29 |
| HCT, PAHT and WHTHT | Other | 1 | £800k | 0.0% | 2024-03-28 |
| Somerset County Council | Other | 1 | £681k | 0.0% | 2019-11-22 |
| Somerset Council | Other | 2 | £625k | 0.0% | 2024-12-01 |
| Northampton General Hospital NHS Trust | Other | 2 | £600k | 0.0% | 2023-07-01 |
| West Suffolk NHS Foundation Trust | Other | 2 | £600k | 0.0% | 2021-10-18 |
| THE PENNINE ACUTE HOSPITAL N H S TRUST | Other | 1 | £540k | 0.0% | 2016-03-21 |
| SYNCHRONICITY CARE LTDNew | Other | 1 | £388k | 0.0% | 2025-11-28 |
| Kent Community Health NHS Foundation Trust | Other | 1 | £310k | 0.0% | 2023-03-31 |
| Walsall Healthcare NHS Trust | Other | 2 | £156k | 0.0% | 2025-05-16 |
| NHS MIDLANDS AND LANCASHIRE COMMISSIONING SUPPORT UNITNew | Other | 1 | £92k | 0.0% | 2025-12-16 |
| University Hospitals Sussex NHS Foundation TrustNew | Other | 1 | £87k | 0.0% | 2025-02-27 |
| Norfolk and Norwich University Hospitals NHS Foundation Trust | Other | 1 | £72k | 0.0% | 2023-02-14 |
| DERBYSHIRE SUPPORT FACILTIES SERVICES | Other | 1 | £36k | 0.0% | 2021-04-16 |
| Derbyshire Support and Facilities Services Ltd | Other | 1 | £36k | 0.0% | 2020-08-30 |
| Medicines and Healthcare Products Regulatory Agency | Other | 1 | £20k | 0.0% | 2022-04-21 |
| Dorset HealthCare University NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| NHS Shared Business Services | Other | 6 | £0k | 0.0% | |
| City & County of Swansea | Other | 1 | £0k | 0.0% | |
| Guy's and St Thomas' NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| HealthTrust Europe LLP (HTE) acting on behalf of | Other | 1 | £0k | 0.0% | |
| NHS London Procurement Partnership | Other | 1 | £0k | 0.0% | |
| NHS Commissioning Board (acting through NHS South Central and West Commissioning Support Unit) | Other | 1 | £0k | 0.0% | |