| Echelon Consultancy Ltd | Other | 2 | £35m | 29.2% | 2024-09-30 |
| London Borough of Merton | Other | 2 | £15m | 12.4% | 2023-07-19 |
| PROSPER | Other | 1 | £14m | 11.5% | 2020-09-04 |
| Fusion21 Members Consortium | Other | 5 | £8m | 7.0% | 2025-04-15 |
| Central and Cecil Housing Trust | Other | 4 | £8m | 6.7% | 2021-01-07 |
| Notting Hill Genesis | Other | 1 | £6m | 5.2% | 2019-09-26 |
| National GalleryNew | Other | 1 | £5m | 3.9% | 2026-04-27 |
| RESTORATION AND RENEWAL DELIVERY AUTHORITY LTD | Other | 2 | £4m | 3.7% | 2021-12-16 |
| Kent County Council | Other | 4 | £3m | 2.8% | 2025-09-04 |
| ProcurePublicNew | Other | 1 | £3m | 2.8% | 2025-03-20 |
| LHC | Other | 3 | £3m | 2.6% | 2022-09-05 |
| London School of Hygiene & Tropical MedicineNew | Other | 2 | £3m | 2.5% | 2025-08-08 |
| LondonEnergy Ltd | Other | 1 | £2m | 2.0% | 2022-03-04 |
| N H S Shared Business ServicesNew | Other | 1 | £2m | 1.6% | 2025-01-06 |
| Northern Housing Consortium Ltd | Other | 1 | £2m | 1.6% | 2020-04-01 |
| London Borough of Sutton | Other | 2 | £957k | 0.8% | 2024-06-28 |
| West Hertfordshire Teaching Hospitals NHS Trust | Other | 2 | £875k | 0.7% | 2026-02-04 |
| Royal Borough of Greenwich | Other | 5 | £661k | 0.5% | 2016-09-14 |
| Sandwell Metropolitan Borough Council | Other | 1 | £564k | 0.5% | 2019-08-23 |
| NEUPC Ltd | Other | 1 | £528k | 0.4% | 2019-07-15 |
| Partners Procurement Service (PPS)New | Other | 1 | £385k | 0.3% | 2026-05-11 |
| NORTHERN HOUSING CONSORTIUM LIMITED | Other | 5 | £300k | 0.2% | 2021-07-01 |
| Dounreay Site Restoration Limited | Other | 1 | £286k | 0.2% | 2017-05-26 |
| MI CONCEPTS LIMITED | Other | 1 | £238k | 0.2% | 2018-01-08 |
| LGSS Procurement on behalf of Cambridgeshire County Council | Other | 1 | £167k | 0.1% | 2020-01-28 |
| Ebbsfleet Development CorporationNew | Other | 1 | £119k | 0.1% | 2024-12-18 |
| Suffolk Sourcing | Other | 1 | £76k | 0.1% | 2020-10-23 |
| Newcastle University | Other | 2 | £73k | 0.1% | 2020-12-04 |
| Tower Hamlets Community Housing Limited | Other | 1 | £38k | 0.0% | 2016-02-11 |
| NHS Property Services Limited | Other | 1 | £33k | 0.0% | 2022-03-18 |
| St Helens Council | Other | 1 | £25k | 0.0% | 2021-04-01 |
| Hertfordshire County Council - ResourcesNew | Other | 1 | £0k | 0.0% | 2025-01-17 |
| Reading Borough Council | Other | 1 | £0k | 0.0% | 2018-07-02 |
| UNITED UTILITIES WATER LIMITED | Other | 1 | £0k | 0.0% | |
| NATIONAL GRID UK LIMITED | Other | 1 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 1 | £0k | 0.0% | |
| The Association of North East Councils Limited | Other | 1 | £0k | 0.0% | |
| LUPC Ltd | Other | 7 | £0k | 0.0% | |
| Peel Ports Investments Limited | Other | 1 | £0k | 0.0% | |
| South East Consortium | Other | 1 | £0k | 0.0% | |
| Watford Community Housing | Other | 1 | £0k | 0.0% | |
| UNIVERSITY OF MANCHESTER | Other | 1 | £0k | 0.0% | |
| CLARION HOUSING PROPERTY DEVELOPMENT SERVICES LIMITED | Other | 1 | £0k | 0.0% | |
| Community Housing | Other | 1 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 1 | £0k | 0.0% | |