| Leicestershire County Council, trading as ESPONew | Other | 2 | £125m | 45.7% | 2026-04-14 |
| Kent County Council (t/a KCS Professional Services) | Other | 2 | £68m | 25.0% | 2021-03-01 |
| North of England Commercial Procurement CollaborativeNew | Other | 1 | £30m | 10.8% | 2025-02-07 |
| N H S Shared Business Services | Other | 2 | £17m | 6.1% | 2023-11-16 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £8m | 2.9% | 2020-06-22 |
| COUNTESS OF CHESTER HOSPITAL NHS FOUNDATION TRUST | Other | 3 | £8m | 2.8% | 2021-06-15 |
| London Universities Purchasing Consortium | Other | 3 | £5m | 1.9% | 2023-06-13 |
| HM Revenue & Customs | Other | 4 | £5m | 1.7% | 2021-03-29 |
| Home Office | Other | 1 | £2m | 0.7% | 2014-04-06 |
| South Wales Police | Other | 1 | £2m | 0.5% | 2020-02-26 |
| 7 Forces Commercial ServicesNew | Other | 7 | £714k | 0.3% | 2025-04-04 |
| ATAMIS LTD | Other | 1 | £700k | 0.3% | 2021-06-14 |
| Espo | Other | 9 | £571k | 0.2% | 2019-11-29 |
| NHS Property ServicesNew | Other | 1 | £526k | 0.2% | 2025-01-22 |
| H M REVENUE & CUSTOMS | Other | 1 | £265k | 0.1% | 2022-06-01 |
| Lancashire County CouncilNew | Other | 1 | £260k | 0.1% | 2024-05-30 |
| Derbyshire County Council | Other | 2 | £239k | 0.1% | 2023-10-06 |
| Borough Council of Calderdale | Other | 1 | £150k | 0.1% | 2023-11-27 |
| East Suffolk and North Essex NHS FT | Other | 2 | £125k | 0.0% | 2022-03-16 |
| Bradford Teaching Hospitals NHS Foundation TrustNew | Other | 1 | £119k | 0.0% | 2025-11-07 |
| Newcastle City Council | Other | 1 | £100k | 0.0% | 2023-04-12 |
| Leeds Teaching Hospitals NHS TrustNew | Other | 1 | £90k | 0.0% | 2024-06-12 |
| Staffordshire County Council | Other | 1 | £90k | 0.0% | 2018-09-11 |
| North Cumbria Integrated Care NHS Foundation TrustNew | Other | 1 | £84k | 0.0% | 2024-07-10 |
| HM Land Registry | Other | 1 | £83k | 0.0% | 2019-11-21 |
| City of Doncaster CouncilNew | Other | 1 | £80k | 0.0% | 2024-10-01 |
| Food Standards Agency | Other | 1 | £65k | 0.0% | 2023-11-03 |
| Police and Crime Commissioner for LincolnshireNew | Other | 1 | £57k | 0.0% | 2026-03-05 |
| University Hospitals Dorset NHS Foundation Trust | Other | 3 | £54k | 0.0% | 2022-10-18 |
| Warwickshire Police | Other | 1 | £50k | 0.0% | 2023-02-07 |
| Southampton City Council | Other | 1 | £40k | 0.0% | 2018-09-03 |
| BLACK COUNTRY HEALTHCARE NHS FOUNDATION TRUST | Other | 1 | £39k | 0.0% | 2024-04-01 |
| London Ambulance Service NHS TrustNew | Other | 1 | £37k | 0.0% | 2026-01-12 |
| Kirklees CouncilNew | Other | 1 | £36k | 0.0% | 2025-09-15 |
| Sunderland City Council | Other | 1 | £36k | 0.0% | 2021-11-24 |
| The Christie NHS Foundation Trust | Other | 1 | £35k | 0.0% | 2023-08-01 |
| University Hospitals of Derby and Burton NHS Foundation Trust | Other | 1 | £35k | 0.0% | 2022-09-05 |
| NOTTINGHAMSHIRE POLICENew | Other | 1 | £23k | 0.0% | 2024-05-29 |
| The Pensions Regulator | Other | 1 | £20k | 0.0% | 2023-01-24 |
| Norwich City Council e-Tendering | Other | 1 | £18k | 0.0% | 2017-10-23 |
| Torbay Council | Other | 1 | £13k | 0.0% | 2024-05-10 |
| London Ambulance Service | Other | 1 | £12k | 0.0% | 2021-08-20 |
| University of Essex | Other | 1 | £9k | 0.0% | 2021-10-26 |
| North Cumbria University Hospitals Nhs Trust Charitable Fund | Other | 1 | £8k | 0.0% | 2021-06-09 |
| Epping Forest District CouncilNew | Other | 1 | £6k | 0.0% | 2025-01-16 |
| Wyre Forest District Council | Other | 1 | £4k | 0.0% | 2021-05-04 |
| Police and Crime Commissioner for North Wales Police & North Wales Police | Other | 1 | £2k | 0.0% | 2024-02-21 |
| The Ipswich Hospital NHS Trust | Other | 1 | £0k | 0.0% | 2017-08-09 |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITEDNew | Other | 2 | £0k | 0.0% | 2025-06-16 |
| East Sussex County CouncilNew | Other | 1 | £0k | 0.0% | 2025-01-30 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2021-03-12 |
| UNIVERSITY OF EAST ANGLIA | Other | 1 | £0k | 0.0% | 2020-05-22 |
| NHS Business Services Authority | Other | 1 | £0k | 0.0% | 2017-01-10 |
| Leeds and York Partnership NHS Foundation Trust, trading as North of England NHS Commercial Procurement Collaborative ("NOE CPC") | Other | 1 | £0k | 0.0% | |
| Mid and South Essex NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| The Common Services Agency (more commonly known as NHS National Services Scotland) (NSS) | Other | 192 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 1 | £0k | 0.0% | |
| Dundee City Council | Other | 1 | £0k | 0.0% | |
| BLUELIGHT COMMERCIAL LIMITED | Other | 1 | £0k | 0.0% | |
| Luton Council | Other | 1 | £0k | 0.0% | |
| APUC Limited | Other | 1 | £0k | 0.0% | |
| PLYMOUTH COMMUNITY HOMES LIMITED | Other | 1 | £0k | 0.0% | |
| North of England Commercial Procurement Collaborative (NOE CPC) | Other | 1 | £0k | 0.0% | |