| THE GUINNESS PARTNERSHIP LIMITEDNew | Other | 4 | £180m | 57.6% | 2026-01-29 |
| Central Housing Investment Consortium Limited ("CHIC") | Other | 1 | £57m | 18.3% | 2021-04-03 |
| EASTERN PROCUREMENT LIMITEDNew | Other | 2 | £30m | 9.6% | 2026-01-23 |
| Northern Housing Consortium | Other | 1 | £19m | 6.0% | 2019-06-21 |
| North of England Commercial Procurement Collaborative | Other | 2 | £11m | 3.4% | 2024-08-02 |
| Leeds City Council | Other | 2 | £4m | 1.1% | 2020-09-04 |
| Sandwell Metropolitan Borough Council | Other | 1 | £3m | 1.0% | 2020-03-03 |
| NEUPC Ltd | Other | 1 | £2m | 0.7% | 2021-05-04 |
| London Borough of Hillingdon | Other | 5 | £1m | 0.5% | 2020-11-01 |
| Fusion21 Members ConsortiumNew | Other | 4 | £1m | 0.4% | 2024-07-08 |
| YPO | Other | 2 | £588k | 0.2% | 2022-06-17 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITED | Other | 1 | £578k | 0.2% | 2021-07-31 |
| NORTHERN HOUSING CONSORTIUM LIMITED | Other | 2 | £453k | 0.1% | 2025-08-21 |
| Liverpool Heart and Chest Hospital | Other | 1 | £402k | 0.1% | 2023-11-08 |
| DUDLEY MBC | Other | 1 | £400k | 0.1% | 2023-10-12 |
| Bedford Borough Council | Other | 1 | £375k | 0.1% | 2023-04-06 |
| NHS South West - Acutes | Other | 1 | £370k | 0.1% | 2018-07-19 |
| West Northamptonshire Council | Other | 1 | £335k | 0.1% | 2024-04-18 |
| Lincolnshire Partnership NHS Foundation TrustNew | Other | 1 | £220k | 0.1% | 2025-12-11 |
| Efficiency East Midlands Ltd | Other | 1 | £189k | 0.1% | 2017-12-22 |
| LIFECYCLE MANAGEMENT GROUP LIMITEDNew | Other | 1 | £143k | 0.0% | 2025-06-03 |
| Partners Procurement Service | Other | 1 | £134k | 0.0% | 2020-03-26 |
| University of BrightonNew | Other | 1 | £110k | 0.0% | 2026-04-27 |
| The Industrial Dwellings Society (1885) LtdNew | Other | 2 | £52k | 0.0% | 2025-09-26 |
| CORBY BOROUGH COUNCIL | Other | 1 | £39k | 0.0% | 2020-02-17 |
| EFFICIENCY EAST MIDLANDS LIMITEDNew | Other | 7 | £0k | 0.0% | 2026-03-30 |
| PROCURE PLUS HOLDINGS LIMITEDNew | Other | 2 | £0k | 0.0% | 2026-03-30 |
| Communities & Housing Investment Consortium Ltd (CHIC)New | Other | 4 | £0k | 0.0% | 2025-11-26 |
| LEASEGUARD GROUP LIMITED | Other | 1 | £0k | 0.0% | 2018-02-19 |
| LINCOLNSHIRE HOUSING PARTNERSHIP LIMITED | Other | 1 | £0k | 0.0% | |
| Leeds and York Partnership NHS Foundation Trust, trading as North of England NHS Commercial Procurement Collaborative ("NOE CPC") | Other | 1 | £0k | 0.0% | |
| Peabody Trust | Other | 1 | £0k | 0.0% | |
| Staffordshire County Council | Other | 1 | £0k | 0.0% | |
| GLOUCESTERSHIRE HOSPITALS SUBSIDIARY COMPANY LIMITED | Other | 1 | £0k | 0.0% | |
| Espo | Other | 1 | £0k | 0.0% | |
| Sanctuary Housing Association | Other | 1 | £0k | 0.0% | |
| Royal Borough of Kensington and Chelsea | Other | 1 | £0k | 0.0% | |
| NHMF (NPC) LIMITED | Other | 1 | £0k | 0.0% | |
| Gloucestershire County Council | Other | 1 | £0k | 0.0% | |
| Eastern Procurement Ltd | Other | 1 | £0k | 0.0% | |
| North of England Commercial Procurement Collaborative (NOE CPC) (hosted by and acting through Leeds and York Partnership NHS Foundation Trust.) | Other | 1 | £0k | 0.0% | |
| NWUPC | Other | 1 | £0k | 0.0% | |
| London Borough of Lewisham | Other | 1 | £0k | 0.0% | |