| North Eastern Universities Purchasing Consortium | Other | 1 | £89m | 43.0% | 2018-07-25 |
| YPO | Other | 9 | £32m | 15.4% | 2025-06-26 |
| Crown Commercial Service | Other | 2 | £24m | 11.6% | 2020-03-30 |
| H M REVENUE & CUSTOMSNew | Other | 1 | £11m | 5.2% | 2025-12-05 |
| Department for Work & Pensions | Other | 1 | £10m | 4.8% | 2021-03-29 |
| South Yorkshire Police Headquarters | Other | 3 | £5m | 2.5% | 2020-10-06 |
| North Western Universities Purchasing Consortium | Other | 2 | £5m | 2.4% | 2023-04-25 |
| NORTH WESTERN UNIVERSITIES PURCHASING CONSORTIUM LIMITED | Other | 1 | £4m | 1.8% | 2019-04-30 |
| Lancashire Constabulary | Other | 2 | £2m | 1.0% | 2025-08-28 |
| FIRST GREATER WESTERN LIMITEDNew | Other | 1 | £2m | 1.0% | 2025-12-16 |
| Procurement for Housing | Other | 1 | £2m | 1.0% | 2017-10-23 |
| Office for National Statistics | Other | 3 | £2m | 0.8% | 2026-04-24 |
| North Yorkshire County Council | Other | 3 | £2m | 0.7% | 2025-04-01 |
| UNIVERSITY OF KEELE | Other | 1 | £2m | 0.7% | 2023-08-24 |
| Lancashire County Council | Other | 2 | £1m | 0.6% | 2022-11-25 |
| Driver and Vehicle Licensing AgencyNew | Other | 1 | £1m | 0.5% | 2025-04-01 |
| University of Essex | Other | 3 | £928k | 0.4% | 2025-08-08 |
| Northumbria Police | Other | 1 | £900k | 0.4% | 2021-11-30 |
| OFCOM | Other | 2 | £760k | 0.4% | 2024-01-09 |
| CENTRE FOR PROCESS INNOVATION LIMITED | Other | 1 | £750k | 0.4% | 2023-06-16 |
| Newcastle University | Other | 12 | £745k | 0.4% | 2023-07-25 |
| Birmingham City Council | Other | 1 | £595k | 0.3% | 2023-05-23 |
| UNIVERSITY OF NOTTINGHAM (THE) | Other | 7 | £578k | 0.3% | 2019-07-16 |
| UNIVERSITY OF DERBY | Other | 3 | £573k | 0.3% | 2022-09-02 |
| Sheffield Hallam University | Other | 8 | £556k | 0.3% | 2021-08-20 |
| CHESHIRE EAST COUNCIL | Other | 2 | £550k | 0.3% | 2021-01-13 |
| Warwickshire Police | Other | 2 | £522k | 0.3% | 2025-11-04 |
| West Yorkshire Combined Authority | Other | 2 | £453k | 0.2% | 2025-12-01 |
| Police and Crime Commissioner for Lincolnshire | Other | 3 | £374k | 0.2% | 2025-01-22 |
| NHS Property Services Limited | Other | 1 | £371k | 0.2% | 2021-03-10 |
| Newark & Sherwood District Council | Other | 1 | £371k | 0.2% | 2016-12-07 |
| Derbyshire County Council | Other | 2 | £289k | 0.1% | 2023-11-24 |
| EU SUPPLY LIMITED | Other | 2 | £256k | 0.1% | 2022-03-17 |
| Chorley Council | Other | 1 | £254k | 0.1% | 2019-06-20 |
| Construction Industry Training BoardNew | Other | 2 | £250k | 0.1% | 2025-05-16 |
| York and North Yorkshire Combined Authority acting on behalf of itself and the Chief Constable of North Yorkshire PoliceNew | Other | 1 | £240k | 0.1% | 2024-08-09 |
| Staffordshire Police | Other | 1 | £240k | 0.1% | 2022-05-22 |
| Telford CollegeNew | Other | 1 | £238k | 0.1% | 2026-02-12 |
| Plymouth City Council | Other | 1 | £236k | 0.1% | 2022-11-08 |
| New College Swindon | Other | 3 | £227k | 0.1% | 2024-12-11 |
| THE UNIVERSITY OF CUMBRIA | Other | 3 | £222k | 0.1% | |
| CPS | Other | 2 | £220k | 0.1% | 2024-12-18 |
| Bury CollegeNew | Other | 2 | £188k | 0.1% | 2024-10-09 |
| EMSCU Nottinghamshire Police | Other | 2 | £186k | 0.1% | 2019-10-31 |
| Suffolk County Council | Other | 2 | £174k | 0.1% | 2020-04-09 |
| Manchester City Council | Other | 1 | £150k | 0.1% | 2019-01-03 |
| University of Leeds | Other | 1 | £150k | 0.1% | 2016-06-14 |
| HS2 | Other | 1 | £149k | 0.1% | 2019-03-25 |
| Ministry of Defence | Other | 1 | £145k | 0.1% | 2023-02-15 |
| Chelmsford City CouncilNew | Other | 1 | £138k | 0.1% | 2026-04-23 |
| LEEDS TRINITY UNIVERSITY | Other | 3 | £123k | 0.1% | 2022-06-17 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 1 | £122k | 0.1% | 2022-09-06 |
| UNIVERSITY OF HULL | Other | 1 | £108k | 0.1% | 2019-07-31 |
| Police, Fire & Crime Commissioner for StaffordshireNew | Other | 1 | £100k | 0.0% | 2025-09-03 |
| York and North Yorkshire Combined Authority acting as Fire and Rescue Authority.New | Other | 1 | £100k | 0.0% | 2024-09-12 |
| Epping Forest District Council | Other | 1 | £95k | 0.0% | 2020-01-05 |
| Tenet Education Services Ltd | Other | 1 | £87k | 0.0% | 2022-07-13 |
| South Western Ambulance Service NHS Foundation Trust | Other | 2 | £86k | 0.0% | 2016-09-22 |
| Liverpool John Moores University | Other | 1 | £85k | 0.0% | 2017-03-07 |
| Cafcass | Other | 2 | £83k | 0.0% | 2022-08-30 |
| Corserv Limited | Other | 1 | £82k | 0.0% | 2020-07-02 |
| Falmouth Exeter Plus | Other | 1 | £66k | 0.0% | 2017-08-02 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 2 | £65k | 0.0% | 2018-09-25 |
| UK Debt Management Office | Other | 1 | £60k | 0.0% | 2020-02-02 |
| National Museums Liverpool | Other | 1 | £59k | 0.0% | 2022-01-05 |
| West Yorkshire Fire and Rescue Authority | Other | 2 | £50k | 0.0% | |
| UNIVERSITY OF SHEFFIELD | Other | 1 | £44k | 0.0% | 2020-06-26 |
| CRESCENT PURCHASING LIMITEDNew | Other | 2 | £42k | 0.0% | 2025-06-17 |
| COLLEGE OF POLICING LIMITED | Other | 1 | £37k | 0.0% | 2021-11-08 |
| University Of The West Of England | Other | 1 | £24k | 0.0% | 2022-07-04 |
| New City College | Other | 1 | £21k | 0.0% | 2021-09-27 |
| National Audit Office | Other | 1 | £21k | 0.0% | 2020-02-07 |
| Ryedale District Council | Other | 1 | £20k | 0.0% | 2021-09-01 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £17k | 0.0% | 2024-04-09 |
| Kirklees College | Other | 1 | £16k | 0.0% | 2020-04-21 |
| University of Plymouth | Other | 1 | £13k | 0.0% | 2019-04-16 |
| United Kingdom Hydrographic Office | Other | 1 | £10k | 0.0% | 2018-04-25 |
| Telford & Wrekin Council | Other | 1 | £10k | 0.0% | 2019-02-12 |
| The Manchester College | Other | 1 | £0k | 0.0% | 2019-01-08 |
| Halesowen College | Other | 1 | £0k | 0.0% | 2020-07-16 |
| Supply Hertfordshire | Other | 1 | £0k | 0.0% | 2019-04-02 |
| HE Portal | Other | 1 | £0k | 0.0% | 2017-11-27 |
| University of Portsmouth e-Tendering | Other | 1 | £0k | 0.0% | 2017-10-04 |
| Liverpool School of Tropical Medicine | Other | 1 | £0k | 0.0% | 2017-03-20 |
| Westminster City Council | Other | 1 | £0k | 0.0% | |
| Places for People Group Limited | Other | 2 | £0k | 0.0% | |
| Merseyside Fire and Rescue Authority | Other | 1 | £0k | 0.0% | |
| Foreign Commonwealth and Development Office | Other | 1 | £0k | 0.0% | |
| UK Research & Innovation | Other | 6 | £0k | 0.0% | |
| Office of the Surrey Police & Crime Commissioner | Other | 1 | £0k | 0.0% | |
| Dukefield Procurement Limited | Other | 2 | £0k | 0.0% | |
| HEPCW (Higher Education Purchasing Consortium Wales) | Other | 2 | £0k | 0.0% | |
| Espo | Other | 1 | £0k | 0.0% | |