| Frimley Health NHS Foundation Trust | Other | 3 | £25m | 30.0% | 2025-06-05 |
| NHS Supply Chain | Other | 2 | £19m | 23.2% | 2020-12-01 |
| SUPPLY CHAIN COORDINATION LIMITEDNew | Other | 2 | £13m | 15.7% | 2025-06-25 |
| GATESHEAD HEALTH N H S FOUNDATION TRUST | Other | 1 | £10m | 12.3% | 2016-10-11 |
| NHS London Procurement Partnership (Hosted by Guy's and St Thomas' NHS FT) | Other | 1 | £7m | 8.0% | 2024-03-28 |
| West Hertfordshire Teaching Hospitals NHS Trust | Other | 2 | £2m | 2.4% | 2025-09-01 |
| The Princess Alexandra Hospital NHS Trust | Other | 2 | £1m | 1.4% | 2025-12-09 |
| Hertfordshire NHS Procurement | Other | 1 | £879k | 1.1% | 2021-09-01 |
| The Queen Elizabeth Hospital King's Lynn NHS Foundation Trust | Other | 10 | £511k | 0.6% | 2024-03-22 |
| The Rotherham NHS Foundation Trust | Other | 1 | £508k | 0.6% | 2024-03-06 |
| Northampton General Hospital | Other | 1 | £493k | 0.6% | 2022-05-31 |
| Partners Procurement Service (PPS) | Other | 3 | £483k | 0.6% | 2026-03-08 |
| Department of Health and Social Care (DHSC) | Other | 1 | £338k | 0.4% | 2020-03-31 |
| DERBYSHIRE SUPPORT FACILITIES SERVICES | Other | 1 | £288k | 0.3% | 2020-04-01 |
| Bradford Teaching Hospitals NHS Foundation Trust | Other | 1 | £250k | 0.3% | 2024-03-26 |
| Walsall Healthcare NHS Trust | Other | 2 | £193k | 0.2% | 2020-10-31 |
| BRISTOL & WESTON NHS PURCHASING CONSORTIUMNew | Other | 1 | £190k | 0.2% | 2024-09-01 |
| NHS Blood & Transplant | Other | 1 | £166k | 0.2% | 2024-03-25 |
| West Suffolk NHS Foundation Trust | Other | 2 | £156k | 0.2% | 2022-02-22 |
| University Hospitals Birmingham NHS Foundation TrustNew | Other | 1 | £153k | 0.2% | 2025-07-31 |
| Calderdale and Huddersfield NHS Foundation Trust | Other | 4 | £136k | 0.2% | 2022-03-30 |
| Blood Services South West | Other | 1 | £127k | 0.2% | 2019-03-25 |
| Dorset County Hospital NHS Foundation Trust | Other | 1 | £119k | 0.1% | 2021-10-08 |
| Worcestershire Acute Hospitals NHS Trust | Other | 1 | £116k | 0.1% | 2024-02-12 |
| South Tees Hospitals NHS Foundation Trust | Other | 1 | £112k | 0.1% | 2024-03-31 |
| East and North Hertfordshire NHS Trust | Other | 1 | £100k | 0.1% | 2024-04-01 |
| East and North Hertfordshire Teaching Hospital NHS TrustNew | Other | 1 | £97k | 0.1% | 2025-09-03 |
| ST HELENS & KNOWSLEY TEACHING HOSPITALS NHS TRUST | Other | 1 | £92k | 0.1% | 2021-03-31 |
| Hull University Teaching Hospitals NHS Trust | Other | 7 | £82k | 0.1% | 2021-10-29 |
| Derbyshire Support & Facilities Services (DSFS) | Other | 1 | £42k | 0.1% | 2021-06-29 |
| Midlands & Lancashire C S U | Other | 2 | £41k | 0.0% | 2023-07-28 |
| Derbyshire Support and Facilities Services Lts | Other | 1 | £32k | 0.0% | 2022-03-29 |
| NHS South West - Acutes | Other | 1 | £20k | 0.0% | 2020-10-07 |
| CALDERDALE AND HUDDERSFIELD SOLUTIONS LTD | Other | 1 | £1k | 0.0% | 2021-12-14 |
| Northumbria Healthcare Facilities Management | Other | 1 | £0k | 0.0% | |
| SOMERSET NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| HUMBER TEACHING NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| NHS Wales Shared Service Partnership | Other | 2 | £0k | 0.0% | |
| BELFAST HEALTH AND SOCIAL CARE TRUST | Other | 4 | £0k | 0.0% | |
| NHS London Procurement Partnership | Other | 1 | £0k | 0.0% | |
| Guy's and St Thomas' NHS Foundation Trust | Other | 3 | £0k | 0.0% | |
| Sheffield Teaching Hospitals NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| KETTERING GENERAL HOSPITAL NHS FOUNDATION TRUST | Other | 2 | £0k | 0.0% | |
| NHS Ayrshire & Arran | Other | 1 | £0k | 0.0% | |
| STOCKPORT NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| Northern Care Alliance NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| North Bristol NHS Trust | Other | 1 | £0k | 0.0% | |
| Northumbria Healthcare NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Liverpool Heart and Chest Hospital NHS Foundation Trust | Other | 1 | £0k | 0.0% | |