| PROCURE PLUS HOLDINGS LIMITED | Other | 9 | £75m | 24.2% | 2025-11-10 |
| Department for Education | Other | 8 | £72m | 23.1% | 2023-03-09 |
| Procurement for Housing | Other | 5 | £28m | 8.9% | 2023-04-01 |
| CIRRUS PURCHASING LTD | Other | 1 | £17m | 5.4% | 2016-05-04 |
| Liverpool City Council | Other | 2 | £15m | 4.9% | 2021-01-06 |
| Spectrum Housing Group | Other | 1 | £14m | 4.4% | 2016-01-07 |
| CTM Portal for the NDA Shared Services Alliance | Other | 1 | £13m | 4.3% | 2020-04-08 |
| STAR Procurement C/O Trafford CouncilNew | Other | 2 | £11m | 3.5% | 2025-05-07 |
| North Western Universities Purchasing Consortium | Other | 18 | £10m | 3.2% | 2025-05-16 |
| NORTH WESTERN UNIVERSITIES PURCHASING CONSORTIUM LIMITED | Other | 3 | £10m | 3.1% | 2018-01-29 |
| Ministry of Justice | Other | 1 | £10m | 3.1% | 2020-12-08 |
| Fusion21 Members Consortium | Other | 2 | £8m | 2.5% | 2020-11-10 |
| Espo | Other | 3 | £7m | 2.3% | 2023-10-12 |
| Nottingham City Council | Other | 2 | £7m | 2.3% | 2022-07-19 |
| YPO | Other | 12 | £3m | 0.9% | 2024-11-08 |
| Newcastle City Council | Other | 1 | £2m | 0.5% | 2019-07-09 |
| North Northamptonshire Council | Other | 1 | £2m | 0.5% | 2023-01-17 |
| Southern HousingNew | Other | 1 | £1m | 0.4% | 2024-07-24 |
| Corserv Limited | Other | 2 | £1m | 0.4% | 2019-05-29 |
| Kirklees Council | Other | 4 | £1m | 0.3% | 2025-04-02 |
| Nottinghamshire County CouncilNew | Other | 1 | £760k | 0.2% | 2025-11-30 |
| FUTURES HOUSING GROUP LIMITED | Other | 1 | £500k | 0.2% | 2023-04-10 |
| Intellectual Property Office | Other | 2 | £448k | 0.1% | 2022-04-01 |
| City of Bradford Metropolitan District Council | Other | 3 | £400k | 0.1% | 2022-03-10 |
| Leeds Beckett University | Other | 3 | £360k | 0.1% | 2021-04-28 |
| NHS Supply ChainNew | Other | 1 | £319k | 0.1% | 2024-12-03 |
| Sheffield City Council | Other | 2 | £286k | 0.1% | 2023-01-16 |
| Frimley Health NHS Foundation Trust | Other | 1 | £251k | 0.1% | 2020-10-27 |
| Cumbria County Council | Other | 1 | £250k | 0.1% | 2019-10-24 |
| UK Research and InnovationNew | Other | 1 | £240k | 0.1% | 2025-12-22 |
| Berneslai Homes LimitedNew | Other | 2 | £220k | 0.1% | 2024-08-28 |
| TOGETHER HOUSING GROUP LIMITED | Other | 1 | £220k | 0.1% | 2024-02-08 |
| Leeds City Council | Other | 3 | £206k | 0.1% | 2023-07-11 |
| Ashfield District Council | Other | 1 | £200k | 0.1% | 2023-10-18 |
| NRS DounreayNew | Other | 4 | £181k | 0.1% | 2025-07-03 |
| Solihull Metropolitan Borough Council | Other | 1 | £160k | 0.1% | 2021-01-18 |
| Dounreay Site Restoration Limited | Other | 1 | £149k | 0.0% | 2023-03-21 |
| Sheffield Hallam University e-Tendering | Other | 1 | £119k | 0.0% | 2016-06-20 |
| University Of The West Of England | Other | 1 | £118k | 0.0% | 2023-04-27 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 3 | £90k | 0.0% | 2024-06-07 |
| Bradford Metropolitan District Council | Other | 1 | £88k | 0.0% | 2017-04-18 |
| Dounreay a division of Magnox Limited | Other | 2 | £77k | 0.0% | 2024-01-15 |
| South Tyneside Homes | Other | 1 | £63k | 0.0% | 2021-07-01 |
| Nuclear Restoration Services LimitedNew | Other | 2 | £62k | 0.0% | 2025-02-28 |
| Sheffield Hallam University | Other | 1 | £58k | 0.0% | 2019-05-08 |
| UNIVERSITY OF NOTTINGHAM (THE) | Other | 1 | £58k | 0.0% | 2021-06-01 |
| DounreayNew | Other | 1 | £54k | 0.0% | 2025-02-27 |
| Moat Homes Limited | Other | 1 | £50k | 0.0% | 2023-06-30 |
| University of Plymouth | Other | 1 | £47k | 0.0% | 2023-09-04 |
| Cardiff UniversityNew | Other | 1 | £31k | 0.0% | 2026-01-19 |
| Nuclear Restoration Services (Dounreay)New | Other | 1 | £28k | 0.0% | 2025-03-11 |
| Foreign Commonwealth and Development Office | Other | 2 | £27k | 0.0% | 2024-03-07 |
| East Riding of Yorkshire | Other | 3 | £26k | 0.0% | 2021-03-31 |
| Nuclear Restoration Services Limited (Dounreay)New | Other | 1 | £26k | 0.0% | 2025-03-11 |
| CENTRE FOR PROCESS INNOVATION LIMITED | Other | 1 | £19k | 0.0% | 2020-10-13 |
| FCDO Services | Other | 1 | £12k | 0.0% | 2016-09-08 |
| ADVANTAGE SOUTHWEST LLP | Other | 1 | £0k | 0.0% | 2019-09-30 |
| CRESCENT PURCHASING LIMITED | Other | 1 | £0k | 0.0% | 2019-06-03 |
| Communities & Housing Investment Consortium Ltd (CHIC)New | Other | 2 | £0k | 0.0% | 2026-05-13 |
| Places for People Group LimitedNew | Other | 3 | £0k | 0.0% | 2026-02-02 |
| Broadland Housing Association LimitedNew | Other | 1 | £0k | 0.0% | 2025-09-24 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2019-10-14 |
| SOVEREIGN HOUSING ASSOCIATION LIMITED | Other | 1 | £0k | 0.0% | 2017-12-14 |
| Sellafield Limited | Other | 5 | £0k | 0.0% | |
| EFFICIENCY EAST MIDLANDS LIMITED | Other | 3 | £0k | 0.0% | |
| The Council of the Borough of Kirklees | Other | 2 | £0k | 0.0% | |
| Scotland Excel | Other | 6 | £0k | 0.0% | |
| Bournemouth Christchurch and Poole Council | Other | 1 | £0k | 0.0% | |
| Procurement Assist Limited c/o Integrated Facilities Management Bolton Ltd (iFM Bolton) | Other | 1 | £0k | 0.0% | |
| Accord Housing Association Limited ta GreenSquareAccord | Other | 2 | £0k | 0.0% | |
| Atomic Weapons Establishment | Other | 1 | £0k | 0.0% | |
| EASTERN PROCUREMENT LIMITED | Other | 1 | £0k | 0.0% | |
| Kent County Council (t/a KCS) | Other | 2 | £0k | 0.0% | |
| City & County of Swansea | Other | 1 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 1 | £0k | 0.0% | |
| Department for Infrastructure | Other | 1 | £0k | 0.0% | |
| Derbyshire County Council | Other | 3 | £0k | 0.0% | |
| Coventry University | Other | 1 | £0k | 0.0% | |
| Adra (Tai) Cyf | Other | 1 | £0k | 0.0% | |
| NHMF (NPC) LIMITED | Other | 1 | £0k | 0.0% | |
| Home Group | Other | 1 | £0k | 0.0% | |
| The Swaythling Housing Society Limited (trading as Abri) | Other | 1 | £0k | 0.0% | |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 2 | £0k | 0.0% | |
| Hillcrest | Other | 1 | £0k | 0.0% | |
| NORTH TYNESIDE COUNCIL | Other | 2 | £0k | 0.0% | |
| NHS Supply Chain operated by North of England Commercial Procurement Collaborative (who are hosted by Leeds and York Partnership NHS Foundation Trust) acting on behalf of Supply Chain Coordination Ltd | Other | 1 | £0k | 0.0% | |
| Northern Ireland Housing Executive | Other | 1 | £0k | 0.0% | |