| Kent County Council (t/a KCS Professional Services) | Other | 2 | £68m | 52.5% | 2021-03-01 |
| North of England Commercial Procurement CollaborativeNew | Other | 1 | £30m | 22.8% | 2025-02-07 |
| N H S Shared Business Services | Other | 1 | £17m | 12.8% | 2023-11-07 |
| COUNTESS OF CHESTER HOSPITAL NHS FOUNDATION TRUST | Other | 3 | £8m | 5.8% | 2021-06-15 |
| London Universities Purchasing Consortium | Other | 2 | £4m | 3.3% | 2023-06-13 |
| CPS | Other | 2 | £651k | 0.5% | 2023-09-13 |
| Espo | Other | 8 | £571k | 0.4% | 2019-11-29 |
| Derbyshire County CouncilNew | Other | 1 | £300k | 0.2% | 2025-09-30 |
| NHS Business Services Authority | Other | 2 | £280k | 0.2% | 2022-06-15 |
| Community Health Partnerships Limited | Other | 1 | £267k | 0.2% | 2020-11-30 |
| South Yorkshire Police Headquarters | Other | 1 | £180k | 0.1% | 2021-06-01 |
| Midlands Partnership Foundation Trust | Other | 3 | £177k | 0.1% | 2025-09-15 |
| Lancashire Constabulary | Other | 2 | £121k | 0.1% | 2024-01-18 |
| Nursing And Midwifery Council | Other | 1 | £120k | 0.1% | 2022-10-05 |
| South Tyneside Council | Other | 1 | £108k | 0.1% | 2021-02-24 |
| DVSA - Driver and Vehicle Standards Agency | Other | 1 | £106k | 0.1% | 2021-11-01 |
| UNIVERSITY OF EXETER | Other | 2 | £96k | 0.1% | 2019-11-22 |
| The Insolvency Service | Other | 2 | £85k | 0.1% | 2024-06-11 |
| East Riding of Yorkshire Council | Other | 1 | £50k | 0.0% | 2021-01-31 |
| University of BristolNew | Other | 1 | £46k | 0.0% | 2024-08-16 |
| Driver & Vehicle Standards Agency | Other | 1 | £42k | 0.0% | 2019-10-28 |
| North Lincolnshire CouncilNew | Other | 2 | £41k | 0.0% | 2025-10-23 |
| South of England Procurement CentreNew | Other | 1 | £38k | 0.0% | 2025-04-01 |
| Darlington Borough Council | Other | 2 | £32k | 0.0% | 2024-01-20 |
| CHESHIRE EAST COUNCIL | Other | 1 | £30k | 0.0% | 2021-01-08 |
| Sheffield Health & Social Care NHS Foundation Trust | Other | 1 | £27k | 0.0% | 2022-06-01 |
| Humankind Charity | Other | 1 | £25k | 0.0% | 2023-07-06 |
| Redcar and Cleveland Borough Council | Other | 1 | £22k | 0.0% | 2021-01-01 |
| Thirteen Housing Group Limited | Other | 1 | £21k | 0.0% | 2021-10-01 |
| rdash nhs foundation trust | Other | 1 | £20k | 0.0% | 2022-07-01 |
| Office for Students | Other | 2 | £15k | 0.0% | 2024-01-08 |
| Equality and Human Rights CommissionNew | Other | 1 | £14k | 0.0% | 2025-09-29 |
| SERIOUS FRAUD OFFICE | Other | 1 | £11k | 0.0% | 2017-12-14 |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITEDNew | Other | 3 | £0k | 0.0% | 2025-06-16 |
| RNN GROUP | Other | 1 | £0k | 0.0% | 2022-11-02 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2021-03-12 |
| Onward Homes | Other | 1 | £0k | 0.0% | 2019-11-19 |
| South Tyneside Borough Council | Other | 1 | £0k | 0.0% | |
| Aberdeenshire Council | Other | 2 | £0k | 0.0% | |
| 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% | |
| Offshore Renewable Energy Catapult | Other | 1 | £0k | 0.0% | |
| BLUELIGHT COMMERCIAL LIMITED | Other | 1 | £0k | 0.0% | |
| Isle of Wight | Other | 1 | £0k | 0.0% | |
| Aberdeen City Council | Other | 4 | £0k | 0.0% | |
| Crown Prosecution Service | Other | 1 | £0k | 0.0% | |
| TORBAY AND SOUTH DEVON NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| APUC Limited | Other | 1 | £0k | 0.0% | |
| New Forest District Council | Other | 1 | £0k | 0.0% | |
| North of England Commercial Procurement Collaborative (NOE CPC) | Other | 1 | £0k | 0.0% | |
| Dumfries and Galloway Council | Other | 1 | £0k | 0.0% | |