| London Borough of Wandsworth | Other | 1 | £33m | 16.4% | 2024-04-04 |
| Royal Borough of Kingston Upon ThamesNew | Other | 2 | £32m | 15.9% | 2024-06-26 |
| London Borough of LambethNew | Other | 2 | £25m | 12.3% | 2024-08-19 |
| Buckinghamshire CouncilNew | Other | 1 | £21m | 10.6% | 2026-02-02 |
| N H S Shared Business Services | Other | 1 | £17m | 8.6% | 2023-12-13 |
| London Borough of Hillingdon | Other | 2 | £11m | 5.6% | 2022-01-14 |
| North of England Commercial Procurement Collaborative | Other | 1 | £11m | 5.5% | 2023-07-06 |
| London Borough of Ealing | Other | 1 | £10m | 5.1% | 2023-04-17 |
| Hull University Teaching Hospitals NHS Trust | Other | 1 | £6m | 3.0% | 2020-03-31 |
| Sandwell Metropolitan Borough Council | Other | 2 | £6m | 2.8% | 2024-02-16 |
| Sefton Council | Other | 1 | £5m | 2.4% | 2023-07-14 |
| Borough Council of Calderdale | Other | 1 | £4m | 2.1% | 2018-09-18 |
| Procurement Lincolnshire | Other | 1 | £4m | 1.9% | 2016-09-20 |
| London Borough of Bromley | Other | 1 | £3m | 1.6% | 2016-12-30 |
| Espo | Other | 1 | £3m | 1.3% | 2019-04-03 |
| Staffordshire County Council | Other | 1 | £3m | 1.3% | 2019-01-02 |
| Wigan Council | Other | 1 | £2m | 1.0% | 2016-08-12 |
| University Hospitals of North Midlands NHS Trust | Other | 1 | £2m | 0.8% | 2017-08-08 |
| City of Doncaster CouncilNew | Other | 1 | £2m | 0.8% | 2026-03-31 |
| Doncaster MBC | Other | 1 | £750k | 0.4% | 2019-09-27 |
| UNIVERSITY OF SOUTHAMPTONNew | Other | 1 | £678k | 0.3% | 2024-05-29 |
| Manchester City Council | Other | 1 | £648k | 0.3% | 2021-10-26 |
| Hertfordshire Community NHS TrustNew | Other | 2 | £86k | 0.0% | 2026-02-24 |
| Blackpool Council | Other | 1 | £85k | 0.0% | 2024-02-22 |
| Hertfordshire Community TrustNew | Other | 1 | £45k | 0.0% | 2026-01-08 |
| CALDERDALE AND HUDDERSFIELD SOLUTIONS LTD | Other | 1 | £25k | 0.0% | 2022-03-31 |
| Walsall Healthcare NHS Trust | Other | 1 | £16k | 0.0% | 2016-03-01 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2019-02-07 |
| Supply Hertfordshire | Other | 1 | £0k | 0.0% | 2018-08-23 |
| Cherwell District & South Northamptonshire Council | Other | 1 | £0k | 0.0% | 2017-06-01 |
| London Borough Of Hillingdon - Adult Social Care | Other | 1 | £0k | 0.0% | 2016-05-17 |
| Cannock Chase District Council | Other | 1 | £0k | 0.0% | |
| THE ROYAL ORTHOPAEDIC HOSPITAL NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| MAG AIRPORT LIMITED | Other | 1 | £0k | 0.0% | |
| Lincolnshire County Council | Other | 1 | £0k | 0.0% | |
| London Borough of Harrow | Other | 1 | £0k | 0.0% | |
| The Association of North East Councils Limited | Other | 1 | £0k | 0.0% | |
| Transport for Wales Rail Limited (Utility Buyer) | Other | 1 | £0k | 0.0% | |
| London Borough of Wandsworth and London Borough of Richmond-upon-Thames | Other | 1 | £0k | 0.0% | |
| North of England Commercial Procurement Collaborative (NOE CPC) (hosted by and acting through Leeds and York Partnership NHS Foundation Trust.) | Other | 1 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 6 | £0k | 0.0% | |
| Walsall Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Westminster City Council | Other | 1 | £0k | 0.0% | |
| NI Practice and Education Council for Nursing and Midwifery | Other | 2 | £0k | 0.0% | |
| Isle of Wight NHS Trust | Other | 1 | £0k | 0.0% | |
| Department for Infrastructure | Other | 1 | £0k | 0.0% | |