| Safe Regeneration Ltd | Other | 8 | £31m | 15.1% | 2022-03-25 |
| Central Housing Investment Consortium Limited ("CHIC") | Other | 2 | £27m | 13.4% | 2021-03-16 |
| Espo | Other | 5 | £26m | 12.7% | 2021-12-21 |
| PROCURE PLUS HOLDINGS LIMITED | Other | 4 | £18m | 8.7% | 2022-05-20 |
| Department for Education | Other | 2 | £14m | 6.8% | 2020-08-04 |
| DEFRA | Other | 4 | £9m | 4.5% | 2025-02-25 |
| Communities & Housing Investment Consortium Ltd (CHIC) | Other | 4 | £8m | 3.9% | 2025-01-27 |
| UNIVERSITY OF EAST ANGLIA | Other | 1 | £6m | 3.0% | 2021-07-07 |
| North of England Commercial Procurement Collaborative | Other | 1 | £5m | 2.6% | 2023-08-03 |
| N H S Shared Business Services | Other | 2 | £5m | 2.5% | 2025-01-06 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 3 | £5m | 2.4% | 2020-02-06 |
| East Riding of Yorkshire CouncilNew | Other | 2 | £4m | 1.7% | 2025-01-08 |
| Homes England (the name adopted by the Homes and Communities Agency) | Other | 23 | £3m | 1.7% | 2025-08-19 |
| UK Health Security Agency | Other | 1 | £3m | 1.6% | 2023-07-28 |
| NEUPC LtdNew | Other | 3 | £3m | 1.5% | 2025-04-16 |
| RIDER LEVETT BUCKNALL UK LIMITED | Other | 1 | £3m | 1.5% | 2021-11-08 |
| Fusion21 Members Consortium | Other | 7 | £3m | 1.5% | 2021-04-27 |
| University of Leeds | Other | 3 | £2m | 1.1% | 2020-02-25 |
| University of Leicester | Other | 2 | £2m | 1.0% | 2019-01-07 |
| Sheffield City Council | Other | 1 | £2m | 0.9% | 2018-11-06 |
| West Yorkshire Combined AuthorityNew | Other | 1 | £2m | 0.9% | 2025-07-31 |
| South Yorkshire Police Headquarters | Other | 2 | £2m | 0.8% | 2019-10-01 |
| LHC | Other | 1 | £2m | 0.8% | 2019-02-12 |
| Peabody Trust | Other | 1 | £1m | 0.7% | 2020-08-04 |
| ROYAL HOLLOWAY, UNIVERSITY OF LONDON | Other | 1 | £1m | 0.6% | 2019-02-15 |
| Joint Procurement Service for Surrey and Sussex Police | Other | 1 | £1m | 0.6% | 2020-11-23 |
| BPHA LIMITED | Other | 2 | £1m | 0.5% | 2023-02-23 |
| East Riding of Yorkshire | Other | 1 | £1m | 0.5% | 2018-11-07 |
| The Association of North East Councils Limited | Other | 2 | £1m | 0.5% | 2022-11-29 |
| Tower Hamlets | Other | 1 | £1m | 0.5% | 2019-03-05 |
| Queen Victoria Hospital NHS Foundation TrustNew | Other | 1 | £842k | 0.4% | 2025-01-01 |
| The Guinness Partnership Ltd | Other | 6 | £833k | 0.4% | 2021-06-25 |
| Cumbria County Council | Other | 1 | £667k | 0.3% | 2018-03-22 |
| Cardiff UniversityNew | Other | 2 | £600k | 0.3% | 2025-12-02 |
| National Highways | Other | 1 | £545k | 0.3% | 2021-09-03 |
| Rother District Council | Other | 1 | £478k | 0.2% | 2023-12-11 |
| Birmingham City Council | Other | 1 | £475k | 0.2% | 2021-02-19 |
| Notting Hill Genesis | Other | 2 | £458k | 0.2% | 2022-06-09 |
| Manchester City Council | Other | 2 | £453k | 0.2% | 2023-02-10 |
| London Ambulance Service NHS TrustNew | Other | 2 | £427k | 0.2% | 2025-04-09 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 2 | £400k | 0.2% | 2024-01-02 |
| NHS Property Services Limited | Other | 2 | £379k | 0.2% | 2023-12-12 |
| Oxford City Council | Other | 3 | £353k | 0.2% | 2020-05-26 |
| Places for People Group Ltd | Other | 2 | £281k | 0.1% | 2023-08-18 |
| The University Of Kent | Other | 2 | £255k | 0.1% | 2019-08-06 |
| Royal Holloway and Bedford New College | Other | 1 | £200k | 0.1% | 2024-02-16 |
| Cheshire West and Chester Council | Other | 1 | £200k | 0.1% | 2021-03-30 |
| University of Bath | Other | 1 | £180k | 0.1% | 2017-11-27 |
| NHS Property ServicesNew | Other | 2 | £178k | 0.1% | 2025-07-03 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £176k | 0.1% | 2020-11-04 |
| UNIVERSITY OF DERBY | Other | 1 | £170k | 0.1% | 2024-03-15 |
| North Somerset CouncilNew | Other | 1 | £159k | 0.1% | 2025-08-12 |
| Knowsley Council | Other | 1 | £158k | 0.1% | 2023-07-28 |
| EN Procure Ltd | Other | 1 | £149k | 0.1% | 2020-08-02 |
| National Audit Office | Other | 2 | £146k | 0.1% | 2024-04-26 |
| Bath and North East Somerset Council | Other | 5 | £142k | 0.1% | 2025-07-08 |
| University of HuddersfieldNew | Other | 2 | £140k | 0.1% | 2025-02-17 |
| Herefordshire Council | Other | 2 | £123k | 0.1% | 2024-06-12 |
| LONDON & QUADRANT HOUSING TRUST | Other | 1 | £115k | 0.1% | 2023-12-20 |
| East and North Hertfordshire NHS Trust and The Princess Alexandra Hospital NHS Trust. | Other | 1 | £114k | 0.1% | 2023-01-27 |
| Worcestershire Acute Hospitals NHS TrustNew | Other | 1 | £114k | 0.1% | 2026-01-06 |
| Bournemouth Christchurch and Poole Council | Other | 1 | £104k | 0.1% | 2021-08-12 |
| Royal Borough of Greenwich | Other | 1 | £102k | 0.1% | 2023-12-20 |
| THE UNIVERSITY OF CUMBRIA | Other | 1 | £96k | 0.0% | 2024-01-31 |
| NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUST | Other | 1 | £94k | 0.0% | 2022-10-17 |
| Chorley Council | Other | 2 | £89k | 0.0% | 2021-02-01 |
| Sovini Ltd | Other | 1 | £83k | 0.0% | 2020-03-03 |
| NEW MODEL IN TECHNOLOGY & ENGINEERING | Other | 1 | £75k | 0.0% | 2018-03-16 |
| South Yorkshire Police | Other | 1 | £70k | 0.0% | 2018-03-05 |
| Sheffield Hallam University | Other | 1 | £58k | 0.0% | 2018-03-29 |
| COMPOUND SEMICONDUCTOR APPLICATIONS CATAPULT LIMITED | Other | 1 | £52k | 0.0% | 2018-03-13 |
| Bradford Teaching Hospitals NHS Foundation Trust | Other | 2 | £46k | 0.0% | 2025-11-28 |
| Bradford Metropolitan District Council | Other | 1 | £44k | 0.0% | 2018-06-22 |
| Humberside Fire and Rescue Service | Other | 1 | £43k | 0.0% | 2016-06-01 |
| Hertfordshire NHS Procurement | Other | 1 | £40k | 0.0% | 2021-07-30 |
| DRAGONFLY DEVELOPMENT LIMITED | Other | 1 | £40k | 0.0% | 2023-07-31 |
| Bath and Northeast Somerset, Swindon and Wiltshire STP | Other | 1 | £39k | 0.0% | 2018-08-24 |
| Bristol City Council | Other | 1 | £37k | 0.0% | 2021-01-29 |
| UNIVERSITY OF SHEFFIELD | Other | 1 | £37k | 0.0% | 2021-03-25 |
| Gloucestershire NHS Foundation TrustNew | Other | 1 | £34k | 0.0% | 2026-02-12 |
| Harris Federation | Other | 1 | £33k | 0.0% | 2020-12-01 |
| CfBT Schools Trust | Other | 1 | £30k | 0.0% | 2019-01-09 |
| East Midlands Ambulance Service NHS TrustNew | Other | 1 | £29k | 0.0% | 2025-06-09 |
| Suffolk Sourcing | Other | 1 | £22k | 0.0% | 2019-10-31 |
| Aster Homes Limited | Other | 1 | £20k | 0.0% | 2019-06-26 |
| YORK AND SCARBOROUGH TEACHING HOSPITALS NHS FOUNDATION TRUST | Other | 1 | £15k | 0.0% | 2018-05-25 |
| City of London Corporation | Other | 1 | £12k | 0.0% | 2017-09-13 |
| Blackpool Council | Other | 1 | £10k | 0.0% | 2018-09-10 |
| Newcastle-under-Lyme Borough Council | Other | 1 | £5k | 0.0% | 2017-11-07 |
| Leicestershire County Council, trading as ESPONew | Other | 16 | £0k | 0.0% | 2026-01-08 |
| Pagabo | Other | 1 | £0k | 0.0% | 2024-04-12 |
| VIVID | Other | 1 | £0k | 0.0% | 2023-07-03 |
| UNIVERSITY OF READING | Other | 1 | £0k | 0.0% | 2022-05-16 |
| Diocese of Norwich Education and Academies Trust | Other | 1 | £0k | 0.0% | 2021-02-10 |
| capitalEsourcing | Other | 1 | £0k | 0.0% | 2020-06-02 |
| Stockport Metropolitan Borough Council | Other | 1 | £0k | 0.0% | 2020-05-12 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2018-10-15 |
| United Lincolnshire Hospitals NHS Trust | Other | 1 | £0k | 0.0% | 2018-08-31 |
| University of Worcester | Other | 1 | £0k | 0.0% | 2016-07-28 |
| Post Office Limited | Other | 1 | £0k | 0.0% | |
| The Education Alliance | Other | 12 | £0k | 0.0% | |
| THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE | Other | 2 | £0k | 0.0% | |
| North of England Commercial Procurement Collaborative (NOE CPC) (hosted by and acting through Leeds and York Partnership NHS Foundation Trust.) | Other | 5 | £0k | 0.0% | |
| Home Group | Other | 2 | £0k | 0.0% | |
| LHC Procurement Group Limited for the Welsh Procurement Alliance (WPA) | Other | 10 | £0k | 0.0% | |
| LHC Procurement Group Limited | Other | 1 | £0k | 0.0% | |
| The University of Northumbria at Newcastle | Other | 2 | £0k | 0.0% | |
| Coventry City Council | Other | 1 | £0k | 0.0% | |
| Royal Borough of Kensington and Chelsea | Other | 4 | £0k | 0.0% | |
| THAMES WATER UTILITIES LIMITED | Other | 1 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 1 | £0k | 0.0% | |
| ateb Housing Group Ltd | Other | 2 | £0k | 0.0% | |
| University of Sunderland | Other | 1 | £0k | 0.0% | |
| BUCKINGHAMSHIRE HEALTHCARE NHS TRUST | Other | 1 | £0k | 0.0% | |
| Enfys Developments Limited | Other | 2 | £0k | 0.0% | |
| South East Coast Ambulance Service NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| The Riverside Group | Other | 3 | £0k | 0.0% | |
| Portsmouth City Council | Other | 1 | £0k | 0.0% | |
| Birmingham City Council on behalf of Birmingham Childrens Trust | Other | 1 | £0k | 0.0% | |
| Translink | Other | 2 | £0k | 0.0% | |