| Espo | Other | 4 | £49m | 53.6% | 2024-03-26 |
| North of England Commercial Procurement CollaborativeNew | Other | 1 | £30m | 32.2% | 2025-02-07 |
| COUNTESS OF CHESTER HOSPITAL NHS FOUNDATION TRUST | Other | 1 | £8m | 8.2% | 2021-06-15 |
| Central and Cecil Housing Trust | Other | 3 | £1m | 1.2% | 2023-11-23 |
| Birmingham City Council | Other | 1 | £1m | 1.2% | 2023-04-17 |
| Procurement for Housing | Other | 1 | £769k | 0.8% | 2014-10-16 |
| The Guinness Partnership LtdNew | Other | 2 | £760k | 0.8% | 2024-06-21 |
| Sheffield City CouncilNew | Other | 1 | £374k | 0.4% | 2025-01-20 |
| Mid Yorkshire Teaching NHS TrustNew | Other | 1 | £143k | 0.2% | 2024-11-25 |
| Bath and North East Somerset Council | Other | 1 | £116k | 0.1% | 2021-01-26 |
| Luminate Education GroupNew | Other | 1 | £89k | 0.1% | 2025-08-08 |
| Ministry of JusticeNew | Other | 1 | £87k | 0.1% | 2025-02-21 |
| Lancaster City Council | Other | 1 | £83k | 0.1% | 2022-03-01 |
| East and North Hertfordshire NHS TrustNew | Other | 1 | £83k | 0.1% | 2025-03-20 |
| NTW Solutions Ltd | Other | 1 | £67k | 0.1% | 2023-07-31 |
| Doncaster College | Other | 1 | £61k | 0.1% | 2023-02-20 |
| South Devon College | Other | 2 | £59k | 0.1% | 2021-12-21 |
| West Hertfordshire Hospitals NHS Trust | Other | 1 | £58k | 0.1% | 2024-02-12 |
| Newcastle University | Other | 4 | £55k | 0.1% | 2018-06-13 |
| Hertfordshire NHS Procurement | Other | 1 | £54k | 0.1% | 2016-08-09 |
| UNIVERSITY OF SOUTHAMPTON | Other | 1 | £51k | 0.1% | 2018-02-01 |
| London Ambulance Service NHS TrustNew | Other | 1 | £47k | 0.1% | 2026-04-24 |
| Kingston Upon Hull City Council | Other | 1 | £40k | 0.0% | 2017-11-30 |
| University Hospitals of Derby and Burton NHS Foundation TrustNew | Other | 1 | £37k | 0.0% | 2025-12-15 |
| The Mayor and Commonalty and Citizens of the City of LondonNew | Other | 1 | £35k | 0.0% | 2025-04-01 |
| The City of Liverpool College | Other | 1 | £33k | 0.0% | 2022-06-27 |
| City of London Corporation | Other | 1 | £31k | 0.0% | 2024-03-01 |
| Information Commissioner's Office | Other | 1 | £31k | 0.0% | 2019-02-25 |
| OPEN UNIVERSITY(THE)New | Other | 1 | £30k | 0.0% | 2025-07-09 |
| City College Plymouth | Other | 2 | £25k | 0.0% | 2016-06-14 |
| St Leger Homes of Doncaster Limited | Other | 1 | £25k | 0.0% | 2021-05-21 |
| City Hospitals Sunderland NHS Foundation Trust | Other | 1 | £16k | 0.0% | 2017-04-14 |
| Sheffield Health & Social Care NHS Foundation Trust | Other | 1 | £9k | 0.0% | 2022-07-13 |
| rdash nhs foundation trust | Other | 1 | £1k | 0.0% | 2022-11-16 |
| Leicestershire County Council, trading as ESPONew | Other | 4 | £0k | 0.0% | 2025-12-04 |
| The Riverside Group LimitedNew | Other | 2 | £0k | 0.0% | 2025-08-01 |
| Comhairle nan Eilean Siar | Other | 1 | £0k | 0.0% | |
| North Western Universities Purchasing Consortium | Other | 1 | £0k | 0.0% | |
| Notting Hill Genesis | Other | 2 | £0k | 0.0% | |
| NHS Lanarkshire | Other | 1 | £0k | 0.0% | |
| THE ROYAL ORTHOPAEDIC HOSPITAL NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| WIRRAL UNIVERSITY TEACHING HOSPITAL NHS FOUNDATION TRUST | 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% | |
| University of Glasgow | Other | 1 | £0k | 0.0% | |
| BISHOP WILKINSON CATHOLIC EDUCATION TRUST | Other | 1 | £0k | 0.0% | |
| Mid Yorkshire Hospitals NHS Trust | Other | 1 | £0k | 0.0% | |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 1 | £0k | 0.0% | |
| Llywodraeth Cymru / Welsh Government - Commercial Delivery | Other | 1 | £0k | 0.0% | |