| CIRRUS PURCHASING LTD | Other | 3 | £61m | 28.5% | 2023-07-07 |
| PROCURE PLUS HOLDINGS LIMITED | Other | 4 | £43m | 19.9% | 2023-07-17 |
| Procurement for Housing | Other | 3 | £28m | 12.8% | 2023-04-01 |
| Espo | Other | 6 | £13m | 5.8% | 2023-10-12 |
| STAR Procurement C/O Trafford CouncilNew | Other | 2 | £11m | 5.0% | 2025-05-07 |
| NORTH WESTERN UNIVERSITIES PURCHASING CONSORTIUM LIMITED | Other | 2 | £8m | 3.8% | 2018-01-29 |
| Fusion21 Members Consortium | Other | 2 | £8m | 3.6% | 2020-11-10 |
| Ark Housing Consultancy | Other | 1 | £7m | 3.3% | 2019-03-18 |
| Derbyshire County Council | Other | 4 | £5m | 2.3% | 2020-04-05 |
| Citizen Housing Group Ltd | Other | 1 | £5m | 2.2% | 2023-03-30 |
| GOVERNMENT PROPERTY AGENCYNew | Other | 1 | £3m | 1.4% | 2025-08-07 |
| Broadacres Housing Association | Other | 1 | £3m | 1.3% | 2021-09-01 |
| Karbon Homes | Other | 1 | £3m | 1.2% | 2018-11-05 |
| Stoke-on-Trent City Council (Unitas Stoke-on-Trent) | Other | 1 | £2m | 1.1% | 2018-09-18 |
| L&Q Construction | Other | 1 | £2m | 0.9% | 2019-12-08 |
| YPO | Other | 1 | £2m | 0.9% | 2018-05-01 |
| Paradigm Housing Group | Other | 3 | £2m | 0.9% | 2024-03-31 |
| Newcastle City Council | Other | 1 | £2m | 0.8% | 2019-07-09 |
| Bolton at Home | Other | 2 | £1m | 0.7% | 2017-06-20 |
| Fortis Living | Other | 1 | £1m | 0.5% | 2017-12-18 |
| Norse Commercial Services Limited | Other | 1 | £1m | 0.5% | 2016-08-31 |
| Kirklees Council | Other | 9 | £790k | 0.4% | 2026-04-23 |
| CORBY BOROUGH COUNCIL | Other | 1 | £650k | 0.3% | 2019-09-11 |
| NCG Corporation | Other | 1 | £587k | 0.3% | 2020-04-14 |
| Leeds City Council | Other | 2 | £480k | 0.2% | 2023-04-21 |
| NHS Property ServicesNew | Other | 1 | £450k | 0.2% | 2025-02-04 |
| Hampshire County CouncilNew | Other | 1 | £400k | 0.2% | 2026-04-20 |
| Housing SolutionsNew | Other | 2 | £360k | 0.2% | 2026-03-27 |
| Department for Education | Other | 1 | £325k | 0.2% | 2021-08-23 |
| Glass FuturesNew | Other | 2 | £300k | 0.1% | 2024-08-01 |
| FCDO Services | Other | 1 | £250k | 0.1% | 2023-08-31 |
| Aster Group Limited | Other | 1 | £243k | 0.1% | 2024-04-01 |
| Redditch Borough Council | Other | 3 | £240k | 0.1% | 2024-08-30 |
| The City of Liverpool CollegeNew | Other | 2 | £203k | 0.1% | 2026-04-23 |
| Uttlesford District CouncilNew | Other | 1 | £80k | 0.0% | 2026-03-01 |
| Herefordshire Housing Limited | Other | 3 | £79k | 0.0% | 2017-12-08 |
| South Tyneside Homes | Other | 1 | £63k | 0.0% | 2021-07-01 |
| Middlesbrough Council | Other | 2 | £51k | 0.0% | 2018-08-10 |
| Hartlepool College of Further Education | Other | 1 | £46k | 0.0% | 2024-01-19 |
| East Riding of Yorkshire | Other | 1 | £41k | 0.0% | 2019-07-26 |
| East & North Hertfordshire Hospitals NHS Trust | Other | 1 | £40k | 0.0% | 2022-01-19 |
| West Hertfordshire Teaching Hospitals NHS TrustNew | Other | 1 | £37k | 0.0% | 2025-03-14 |
| West Midlands Combined AuthorityNew | Other | 1 | £37k | 0.0% | 2024-11-12 |
| East and North Hertfordshire NHS Trust | Other | 1 | £26k | 0.0% | 2023-03-03 |
| CENTRE FOR PROCESS INNOVATION LIMITED | Other | 1 | £19k | 0.0% | 2020-10-13 |
| ADVANTAGE SOUTHWEST LLP | Other | 1 | £0k | 0.0% | 2019-09-30 |
| Communities & Housing Investment Consortium Ltd (CHIC)New | Other | 4 | £0k | 0.0% | 2026-05-13 |
| Places for People Group LimitedNew | Other | 3 | £0k | 0.0% | 2026-02-02 |
| SUPPLY CHAIN COORDINATION LIMITEDNew | Other | 4 | £0k | 0.0% | 2025-09-30 |
| Broadland Housing Association LimitedNew | Other | 1 | £0k | 0.0% | 2025-09-24 |
| Solihull MBCNew | Other | 1 | £0k | 0.0% | 2024-06-25 |
| Durham County Council | Other | 2 | £0k | 0.0% | 2018-04-16 |
| Nuclear Restoration Services Limited | Other | 1 | £0k | 0.0% | |
| FE Southern Regional College | Other | 1 | £0k | 0.0% | |
| CRESCENT PURCHASING LIMITED | Other | 1 | £0k | 0.0% | |
| Choice Housing Ireland Limited | Other | 1 | £0k | 0.0% | |
| EFFICIENCY EAST MIDLANDS LIMITED | Other | 2 | £0k | 0.0% | |
| Kent County Council (t/a LASER Energy) | Other | 2 | £0k | 0.0% | |
| Northern Ireland Electricity Networks Limited | Other | 2 | £0k | 0.0% | |
| University of Plymouth | Other | 2 | £0k | 0.0% | |
| North Western Universities Purchasing Consortium | Other | 4 | £0k | 0.0% | |
| Bournemouth Christchurch and Poole Council | Other | 1 | £0k | 0.0% | |
| APUC Limited | Other | 1 | £0k | 0.0% | |
| Procurement Assist Limited c/o Integrated Facilities Management Bolton Ltd (iFM Bolton) | Other | 1 | £0k | 0.0% | |
| Atomic Weapons Establishment | Other | 1 | £0k | 0.0% | |
| Gateshead Council | Other | 1 | £0k | 0.0% | |
| EASTERN PROCUREMENT LIMITED | Other | 1 | £0k | 0.0% | |
| Loreburn Housing Association | Other | 1 | £0k | 0.0% | |
| VIVID | Other | 1 | £0k | 0.0% | |
| Cirrus Consortium C/O Grand Union Housing Group | Other | 1 | £0k | 0.0% | |
| Home Fix Scotland | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 2 | £0k | 0.0% | |
| Northern Ireland Housing Executive | Other | 2 | £0k | 0.0% | |
| Greater Manchester Combined Authority - GMP | Other | 4 | £0k | 0.0% | |
| Coventry University | Other | 1 | £0k | 0.0% | |
| Warwickshire County Council | Other | 1 | £0k | 0.0% | |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 1 | £0k | 0.0% | |
| NORTH TYNESIDE COUNCIL | Other | 2 | £0k | 0.0% | |
| NI Ambulance Service Trust | Other | 1 | £0k | 0.0% | |