| Government Commercial AgencyNew | Other | 2 | £10.0bn | 89.1% | 2026-01-12 |
| HEART ACADEMIES TRUSTNew | Other | 6 | £850m | 7.6% | 2026-01-15 |
| London Borough of Waltham ForestNew | Other | 3 | £100m | 0.9% | 2026-02-24 |
| Commercial Services Kent LimitedNew | Other | 1 | £90m | 0.8% | 2026-03-30 |
| YPO | Other | 1 | £88m | 0.8% | 2019-12-12 |
| Ministry of Justice | Other | 1 | £30m | 0.3% | 2023-09-15 |
| CIRRUS PURCHASING LTD | Other | 2 | £12m | 0.1% | 2025-08-27 |
| Espo | Other | 5 | £10m | 0.1% | 2022-07-06 |
| SWAN HOUSING ASSOCIATION LIMITED | Other | 2 | £8m | 0.1% | 2021-05-13 |
| Southern Housing | Other | 2 | £7m | 0.1% | 2024-07-08 |
| Procurement for Housing | Other | 4 | £6m | 0.1% | 2023-09-25 |
| City of Doncaster Council | Other | 1 | £5m | 0.0% | 2024-03-13 |
| L&Q Construction | Other | 2 | £4m | 0.0% | 2021-05-11 |
| The Guinness Partnership Ltd | Other | 1 | £3m | 0.0% | 2019-08-21 |
| The Housing Plus Group LimitedNew | Other | 2 | £2m | 0.0% | 2026-04-15 |
| United Lincolnshire Teaching Hospitals NHS TrustNew | Other | 2 | £2m | 0.0% | 2026-04-07 |
| Thirteen Housing Group Ltd | Other | 1 | £2m | 0.0% | 2020-08-03 |
| Staffordshire County Council | Other | 1 | £833k | 0.0% | 2017-10-10 |
| Thanet District Council | Other | 2 | £667k | 0.0% | 2020-04-19 |
| Plymouth Community Homes | Other | 1 | £640k | 0.0% | 2017-09-11 |
| Wandle Housing Association | Other | 6 | £623k | 0.0% | 2023-07-31 |
| Stevenage Borough Council - Department Of Community Services | Other | 1 | £538k | 0.0% | 2016-02-25 |
| East Midlands Housing Group | Other | 2 | £512k | 0.0% | 2023-07-31 |
| Great Places Housing Group | Other | 4 | £497k | 0.0% | 2022-11-21 |
| Gentoo Group Limited | Other | 2 | £468k | 0.0% | 2019-02-18 |
| ISLINGTON & SHOREDITCH HOUSING ASSOCIATION LIMITEDNew | Other | 1 | £400k | 0.0% | 2025-06-03 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £357k | 0.0% | 2020-07-27 |
| First Ark Group | Other | 1 | £300k | 0.0% | 2018-07-02 |
| Ashford Borough Council | Other | 3 | £250k | 0.0% | 2019-02-26 |
| First Choice Homes Oldham | Other | 1 | £160k | 0.0% | 2017-10-02 |
| Suffolk Sourcing | Other | 2 | £68k | 0.0% | 2019-11-21 |
| Newcastle-under-Lyme Borough Council | Other | 1 | £67k | 0.0% | 2017-06-05 |
| Torbay Council | Other | 1 | £64k | 0.0% | 2015-11-11 |
| NHS Arden and GEM CSU | Other | 1 | £24k | 0.0% | 2021-12-14 |
| Housing 21 | Other | 1 | £1k | 0.0% | 2020-07-06 |
| SE Shared Services | Other | 2 | £0k | 0.0% | 2017-09-21 |
| Saltwood C Of E Primary School | Other | 1 | £0k | 0.0% | 2016-01-01 |
| Crown Commercial Service | Other | 1 | £0k | 0.0% | 2015-06-23 |
| New Forest District Council | Other | 1 | £0k | 0.0% | |
| City & County of Swansea | Other | 1 | £0k | 0.0% | |
| Abri | Other | 3 | £0k | 0.0% | |
| HealthTrust Europe LLP (HTE) acting on behalf of | Other | 2 | £0k | 0.0% | |
| National Audit Office | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 3 | £0k | 0.0% | |
| Scottish Government | Other | 1 | £0k | 0.0% | |
| London Councils | Other | 1 | £0k | 0.0% | |
| NHS National Services Scotland | Other | 1 | £0k | 0.0% | |
| West Mercia Police | Other | 1 | £0k | 0.0% | |
| NEPO | Other | 1 | £0k | 0.0% | |
| Stonewater Ltd | Other | 5 | £0k | 0.0% | |
| Southern Universities Purchasing Consortium (SUPC) | Other | 7 | £0k | 0.0% | |
| Cirrus Consortium c/o Halton Housing | Other | 2 | £0k | 0.0% | |
| Mid and South Essex NHS Foundation Trust | Other | 6 | £0k | 0.0% | |
| ACCENT HOUSING LIMITED | Other | 1 | £0k | 0.0% | |
| Hyde Housing Association Ltd | Other | 2 | £0k | 0.0% | |
| BELIEVE HOUSING LIMITED | Other | 3 | £0k | 0.0% | |