| Crown Commercial Service | Other | 11 | £395m | 75.3% | 2025-11-27 |
| The Police and Crime Commissioner for NorthumbriaNew | Other | 3 | £92m | 17.5% | 2026-04-13 |
| YPO | Other | 1 | £6m | 1.2% | 2019-09-20 |
| Driver and Vehicle Licensing Agency | Other | 4 | £4m | 0.8% | 2026-04-22 |
| NHS Digital | Other | 2 | £4m | 0.8% | 2023-01-31 |
| Transport for London | Other | 13 | £3m | 0.5% | 2022-12-14 |
| Sunderland City CouncilNew | Other | 5 | £2m | 0.4% | 2026-02-05 |
| Southend-on-sea Borough Council | Other | 2 | £2m | 0.4% | 2025-01-13 |
| Ministry of Defence | Other | 7 | £1m | 0.3% | 2021-06-01 |
| Isle of Wight Council | Other | 9 | £1m | 0.3% | 2025-12-19 |
| NOTTINGHAMSHIRE POLICENew | Other | 1 | £1m | 0.3% | 2025-03-12 |
| North Northamptonshire CouncilNew | Other | 4 | £1m | 0.3% | 2025-01-20 |
| MCA - Maritime and Coastguard Agency | Other | 6 | £937k | 0.2% | 2026-03-10 |
| Health and Social Care Information Centre | Other | 3 | £838k | 0.2% | 2017-10-27 |
| Home Office | Other | 10 | £617k | 0.1% | 2108-07-09 |
| University Hospitals Birmingham NHS Foundation TrustNew | Other | 3 | £599k | 0.1% | 2025-07-16 |
| Board of Trustees of the Royal Botanic Gardens Kew | Other | 3 | £550k | 0.1% | 2021-09-30 |
| Department for Work & Pensions | Other | 5 | £520k | 0.1% | 2024-04-05 |
| H M REVENUE & CUSTOMSNew | Other | 1 | £357k | 0.1% | 2024-09-24 |
| NORTH TYNESIDE COUNCILNew | Other | 1 | £340k | 0.1% | 2025-09-08 |
| Office for National Statistics | Other | 3 | £333k | 0.1% | 2025-02-01 |
| London Borough of Hackney | Other | 6 | £317k | 0.1% | 2024-03-05 |
| South Yorkshire Fire & RescueNew | Other | 2 | £300k | 0.1% | 2026-01-28 |
| Leicestershire Police | Other | 1 | £288k | 0.1% | 2017-09-20 |
| Housing 21 | Other | 2 | £286k | 0.1% | 2021-01-13 |
| Department for Education | Other | 5 | £284k | 0.1% | 2025-11-07 |
| DfTc - Department for Transport | Other | 2 | £271k | 0.1% | 2023-01-24 |
| Competition and Markets Authority | Other | 3 | £250k | 0.0% | 2023-02-28 |
| NHS NORTH CENTRAL LONDON INTEGRATED CARE BOARDNew | Other | 1 | £238k | 0.0% | 2025-12-23 |
| Student Loans Company | Other | 1 | £230k | 0.0% | 2020-08-10 |
| HS2 | Other | 2 | £218k | 0.0% | 2022-06-29 |
| Department for Transport | Other | 2 | £203k | 0.0% | 2020-03-10 |
| Cafcass | Other | 1 | £200k | 0.0% | 2023-03-15 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 4 | £194k | 0.0% | 2026-03-04 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 6 | £187k | 0.0% | 2026-03-18 |
| Vehicle Certification AgencyNew | Other | 1 | £177k | 0.0% | 2025-09-19 |
| Bradford Teaching Hospitals NHS Foundation TrustNew | Other | 1 | £176k | 0.0% | 2026-02-27 |
| FCDO Services | Other | 6 | £169k | 0.0% | 2019-03-14 |
| Crown Prosecution Service | Other | 1 | £154k | 0.0% | 2020-08-05 |
| NHS Arden and Greater East Midlands Commissioning Support Unit | Other | 1 | £150k | 0.0% | 2018-05-25 |
| The National Archives | Other | 4 | £134k | 0.0% | 2024-08-20 |
| Nottingham City Council | Other | 2 | £133k | 0.0% | 2022-01-24 |
| TOGETHER HOUSING GROUP LIMITEDNew | Other | 1 | £96k | 0.0% | 2026-02-10 |
| Met Office | Other | 2 | £92k | 0.0% | 2025-03-13 |
| GREAT BRITISH ENERGY - NUCLEARNew | Other | 1 | £89k | 0.0% | 2026-03-12 |
| EssexNew | Other | 2 | £88k | 0.0% | 2024-09-05 |
| British Business Bank | Other | 3 | £79k | 0.0% | 2019-02-27 |
| Public Health England | Other | 1 | £79k | 0.0% | 2018-12-20 |
| British Transport Police | Other | 2 | £72k | 0.0% | 2024-10-06 |
| Ofsted | Other | 1 | £67k | 0.0% | 2020-12-18 |
| Care Quality Commission | Other | 2 | £67k | 0.0% | 2025-02-17 |
| Worcestershire County Council | Other | 2 | £66k | 0.0% | 2021-01-15 |
| Norfolk Constabulary Benevolent Fund | Other | 1 | £65k | 0.0% | 2017-07-12 |
| Yorkshire Coast Homes | Other | 1 | £63k | 0.0% | 2017-06-02 |
| Luton CouncilNew | Other | 1 | £62k | 0.0% | 2025-10-01 |
| NHS Northamptonshire Integrated Care BoardNew | Other | 1 | £54k | 0.0% | 2026-03-24 |
| Essex Police & Kent PoliceNew | Other | 1 | £54k | 0.0% | 2024-10-25 |
| South West London & St. Georges Mental Health NHS Trust | Other | 1 | £52k | 0.0% | 2018-03-14 |
| CTM Portal for the NDA Shared Services Alliance | Other | 1 | £51k | 0.0% | 2022-01-13 |
| THE COMMUNITY HOUSING GROUP LIMITED | Other | 1 | £48k | 0.0% | 2022-02-23 |
| Norfolk Constabulary | Other | 1 | £35k | 0.0% | 2020-12-10 |
| St Helens Council | Other | 1 | £35k | 0.0% | 2021-12-23 |
| Gloucestershire County Council | Other | 1 | £34k | 0.0% | 2019-03-04 |
| Companies House | Other | 1 | £33k | 0.0% | 2021-06-28 |
| Barnsley Metropolitan Borough Council | Other | 1 | £31k | 0.0% | 2019-03-25 |
| MSE Group | Other | 1 | £29k | 0.0% | 2021-07-05 |
| Leeds City Council | Other | 2 | £24k | 0.0% | 2019-06-17 |
| Foreign Commonwealth and Development Office | Other | 1 | £19k | 0.0% | 2020-02-17 |
| Department of Health & Social Care | Other | 1 | £19k | 0.0% | 2020-04-08 |
| Nuneaton & Bedworth Borough Council | Other | 1 | £17k | 0.0% | 2021-10-04 |
| National Audit OfficeNew | Other | 1 | £16k | 0.0% | 2024-12-01 |
| Maritime & Coastguard Agency | Other | 1 | £16k | 0.0% | 2020-03-10 |
| Calderdale and Huddersfield NHS Foundation Trust | Other | 1 | £15k | 0.0% | 2022-02-13 |
| DRIVER & VEHICLE LICENSING AGENCY | Other | 1 | £10k | 0.0% | 2020-07-17 |
| Office for Students | Other | 1 | £10k | 0.0% | 2023-12-20 |
| B F I | Other | 1 | £0k | 0.0% | 2019-03-06 |
| BBC (British Broadcasting Corporation) | Other | 1 | £0k | 0.0% | 2016-07-08 |
| City of Sunderland College | Other | 1 | £0k | 0.0% | |
| BUCKINGHAMSHIRE HEALTHCARE NHS TRUST | Other | 1 | £0k | 0.0% | |
| West Berkshire Council | Other | 4 | £0k | 0.0% | |
| Wrexham County Borough Council | Other | 1 | £0k | 0.0% | |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 1 | £0k | 0.0% | |
| The Police and Crime Commissioner for Kent | Other | 3 | £0k | 0.0% | |
| Essex Police, Fire and Crime Commissioner Fire and Rescue Authority | Other | 2 | £0k | 0.0% | |
| Llywodraeth Cymru / Welsh Government - Commercial Delivery | Other | 2 | £0k | 0.0% | |
| Basingstoke and Deane Borough Council | Other | 1 | £0k | 0.0% | |
| ACCENT HOUSING LIMITED | Other | 1 | £0k | 0.0% | |
| Leeds and York Partnership NHS Foundation Trust, trading as North of England NHS Commercial Procurement Collaborative ("NOE CPC") | Other | 3 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 3 | £0k | 0.0% | |
| West Midlands Combined Authority | Other | 1 | £0k | 0.0% | |
| Mining Remediation Authority | Other | 1 | £0k | 0.0% | |
| Police and Crime Commissioner for South Wales | Other | 1 | £0k | 0.0% | |