| Echelon Consultancy LtdNew | Other | 1 | £25m | 23.0% | 2024-09-30 |
| South Tees Development Corporation | Other | 1 | £17m | 15.3% | 2021-03-26 |
| Homes England (the name adopted by the Homes and Communities Agency) | Other | 7 | £12m | 10.9% | 2025-06-30 |
| University Hospitals Dorset NHS Foundation TrustNew | Other | 2 | £8m | 7.3% | 2024-10-25 |
| Norwich City CouncilNew | Other | 1 | £6m | 5.4% | 2025-07-02 |
| Leicester City Council | Other | 6 | £4m | 3.9% | 2024-01-22 |
| Birmingham City Council | Other | 7 | £4m | 3.8% | 2024-06-07 |
| Sandwell Metropolitan Borough Council | Other | 3 | £4m | 3.7% | 2023-06-12 |
| North London Waste Authority | Other | 2 | £4m | 3.5% | 2022-03-23 |
| ProcurePublicNew | Other | 1 | £3m | 3.1% | 2025-03-20 |
| LHC | Other | 4 | £3m | 2.9% | 2022-09-05 |
| EFFICIENCY NORTH LIMITED | Other | 1 | £3m | 2.3% | 2017-05-30 |
| Worcester City Council | Other | 1 | £2m | 1.7% | 2020-10-07 |
| EN Procure LtdNew | Other | 3 | £2m | 1.6% | 2025-07-12 |
| Sheffield City Council | Other | 2 | £2m | 1.4% | 2016-03-29 |
| Kirklees CouncilNew | Other | 1 | £1m | 1.3% | 2025-01-08 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 3 | £1m | 1.2% | 2018-02-03 |
| Wolverhampton City Council | Other | 3 | £1m | 1.1% | 2025-10-08 |
| Homes and Communities Agency | Other | 2 | £1m | 0.9% | 2018-07-27 |
| Wyre Forest District Council | Other | 1 | £821k | 0.8% | 2022-10-24 |
| Worcestershire County Council | Other | 3 | £768k | 0.7% | 2024-08-24 |
| Harper Adams UniversityNew | Other | 1 | £668k | 0.6% | 2026-03-24 |
| West Northamptonshire CouncilNew | Other | 4 | £527k | 0.5% | 2025-04-04 |
| Coventry City Council | Other | 3 | £499k | 0.5% | 2025-01-28 |
| University of SunderlandNew | Other | 1 | £445k | 0.4% | 2024-10-10 |
| Stoke-on-Trent City Council | Other | 3 | £391k | 0.4% | 2024-05-02 |
| Milton Keynes Council | Other | 1 | £381k | 0.4% | 2023-11-10 |
| Milton Keynes City CouncilNew | Other | 1 | £336k | 0.3% | 2026-01-16 |
| Pendle Borough Council | Other | 1 | £278k | 0.3% | 2024-03-08 |
| United Kingdom Atomic Energy Authority | Other | 1 | £190k | 0.2% | 2021-05-27 |
| Weaver Vale Housing Trust e-Tendering | Other | 2 | £188k | 0.2% | 2018-06-10 |
| Lincolnshire Partnership NHS Foundation Trust | Other | 1 | £185k | 0.2% | 2021-01-26 |
| Crown Commercial ServiceNew | Other | 1 | £161k | 0.1% | 2025-11-05 |
| London Borough of Ealing | Other | 1 | £105k | 0.1% | 2019-07-26 |
| NHS Property Services LimitedNew | Other | 1 | £38k | 0.0% | 2024-12-12 |
| Westmorland and Furness CouncilNew | Other | 1 | £0k | 0.0% | 2026-04-01 |
| UNIVERSITY OF EAST ANGLIA | Other | 1 | £0k | 0.0% | 2022-09-14 |
| Central and Cecil Housing Trust | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 2 | £0k | 0.0% | |
| Cambridgeshire County Council | Other | 1 | £0k | 0.0% | |
| Queen Victoria Hospital NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Atomic Weapons Establishment | Other | 1 | £0k | 0.0% | |
| Community Housing | Other | 1 | £0k | 0.0% | |