| Government Commercial AgencyNew | Other | 2 | £1.2bn | 48.7% | 2025-10-13 |
| NHS SHARED BUSINESS SERVICES LIMITEDNew | Other | 8 | £1.0bn | 40.6% | 2025-11-11 |
| NHS London Procurement Partnership (Hosted by Guy's and St Thomas' NHS FT) | Other | 2 | £111m | 4.5% | 2021-11-01 |
| Crown Commercial Service | Other | 1 | £60m | 2.4% | 2020-12-22 |
| NHS EnglandNew | Other | 1 | £25m | 1.0% | 2025-10-03 |
| Construction Industry Training Board | Other | 3 | £15m | 0.6% | 2022-11-09 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £12m | 0.5% | 2020-09-07 |
| NHS Digital | Other | 1 | £10m | 0.4% | 2022-07-08 |
| Lancashire Constabulary | Other | 2 | £5m | 0.2% | 2023-01-05 |
| Procurement for HousingNew | Other | 2 | £4m | 0.2% | 2025-07-01 |
| Oxford City Council | Other | 2 | £3m | 0.1% | 2026-02-26 |
| West Northamptonshire Council | Other | 2 | £2m | 0.1% | 2025-12-23 |
| Transport for London | Other | 1 | £2m | 0.1% | 2019-09-09 |
| Greater London Authority | Other | 2 | £2m | 0.1% | 2019-08-29 |
| General Dental CouncilNew | Other | 2 | £2m | 0.1% | 2025-08-18 |
| Epping Forest District Council | Other | 2 | £1m | 0.0% | 2022-07-18 |
| Staffordshire County Council | Other | 3 | £1m | 0.0% | 2026-03-26 |
| Yorkshire and Humber Police Procurement (Y&HPP) | Other | 1 | £1m | 0.0% | 2017-09-01 |
| HM Land Registry | Other | 1 | £1m | 0.0% | 2023-10-04 |
| Northampton Borough Council | Other | 1 | £1m | 0.0% | 2020-10-15 |
| Kent County CouncilNew | Other | 5 | £910k | 0.0% | 2025-10-26 |
| Folkestone and Hythe District Council | Other | 1 | £856k | 0.0% | 2022-01-14 |
| LGSS | Other | 1 | £769k | 0.0% | 2019-07-31 |
| EU SUPPLY LIMITED | Other | 1 | £720k | 0.0% | 2022-08-11 |
| Runnymede Borough CouncilNew | Other | 1 | £660k | 0.0% | 2026-03-05 |
| Barking, Havering and Redbridge University Hospitals NHS Trust | Other | 1 | £640k | 0.0% | 2024-04-22 |
| Yorkshire and Humber Police Procurement (Y&HPP) | Other | 1 | £357k | 0.0% | 2023-11-30 |
| HER MAJESTYS LAND REGISTRY | Other | 2 | £258k | 0.0% | 2017-06-23 |
| The Insolvency ServiceNew | Other | 1 | £200k | 0.0% | 2024-07-04 |
| Cheshire Constabulary on behalf of the Police and Crime Commissioner for Cheshire | Other | 1 | £193k | 0.0% | 2020-09-17 |
| UK Biobank Ltd | Other | 2 | £191k | 0.0% | 2022-07-15 |
| Dartford Borough CouncilNew | Other | 1 | £180k | 0.0% | 2025-06-12 |
| Fenland District CouncilNew | Other | 1 | £150k | 0.0% | 2024-10-15 |
| British Transport Police | Other | 1 | £104k | 0.0% | 2023-06-13 |
| Westmorland and Furness CouncilNew | Other | 1 | £80k | 0.0% | 2026-03-04 |
| Blackburn With Darwen Borough Council | Other | 1 | £70k | 0.0% | 2016-08-16 |
| Warwickshire Police | Other | 1 | £50k | 0.0% | 2022-10-26 |
| Wirral Borough Council | Other | 1 | £48k | 0.0% | 2021-02-19 |
| Wyre Forest District Council | Other | 1 | £17k | 0.0% | 2019-08-09 |
| Warwickshire Police & West Mercia Police Procurement & Contracts Department | Other | 1 | £10k | 0.0% | 2020-03-25 |
| Stoke-on-Trent City Council | Other | 1 | £8k | 0.0% | 2024-05-20 |
| Breckland District CouncilNew | Other | 1 | £0k | 0.0% | 2024-08-07 |
| Tewkesbury Borough Council | Other | 1 | £0k | 0.0% | 2023-08-29 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2018-07-09 |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 1 | £0k | 0.0% | |
| Printing and postage service ITT034LM | Other | 1 | £0k | 0.0% | |
| Cannock Chase District Council | Other | 1 | £0k | 0.0% | |
| Guy's and St Thomas' NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| HealthTrust Europe LLP (HTE) acting on behalf of | Other | 1 | £0k | 0.0% | |
| University of Essex | Other | 1 | £0k | 0.0% | |
| EFFICIENCY EAST MIDLANDS LIMITED | Other | 2 | £0k | 0.0% | |
| NHS London Procurement Partnership | Other | 1 | £0k | 0.0% | |