| Global Commercial Services Group LtdNew | Other | 6 | £500m | 64.0% | 2025-10-16 |
| NHS London Procurement Partnership (Hosted by Guy's and St Thomas' NHS FT) | Other | 2 | £111m | 14.2% | 2021-11-01 |
| NHS Shared Business Services Ltd (NHS SBS) | Other | 1 | £53m | 6.7% | 2021-03-01 |
| UNIVERSITY OF SOUTHAMPTON | Other | 87 | £22m | 2.8% | 2026-02-23 |
| CRESCENT PURCHASING LIMITED | Other | 8 | £13m | 1.6% | 2026-05-20 |
| New College Durham | Other | 2 | £9m | 1.2% | 2024-08-21 |
| UNIVERSITY OF SHEFFIELD | Other | 28 | £7m | 0.9% | 2025-01-29 |
| SOUTHERN UNIVERSITIES MANAGEMENT SERVICES | Other | 1 | £7m | 0.9% | 2016-05-26 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 68 | £6m | 0.7% | 2026-04-28 |
| NORTH WESTERN UNIVERSITIES PURCHASING CONSORTIUM LIMITED | Other | 1 | £5m | 0.7% | 2019-06-19 |
| University Of The West Of England | Other | 36 | £4m | 0.5% | 2025-09-18 |
| OPEN UNIVERSITY(THE)New | Other | 2 | £4m | 0.5% | 2025-11-12 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITED | Other | 9 | £4m | 0.5% | 2025-07-23 |
| UNIVERSITY OF DERBY | Other | 17 | £2m | 0.3% | 2025-09-08 |
| UNIVERSITY OF SUSSEX(THE) | Other | 11 | £2m | 0.3% | 2025-12-14 |
| ASTON UNIVERSITY | Other | 4 | £2m | 0.3% | 2024-12-04 |
| Newcastle University | Other | 15 | £2m | 0.3% | 2023-10-19 |
| University of Sunderland | Other | 4 | £2m | 0.2% | 2026-03-14 |
| UNIVERSITY OF KEELENew | Other | 4 | £1m | 0.2% | 2026-02-27 |
| Keele University | Other | 4 | £1m | 0.2% | 2024-03-22 |
| United Kingdom Atomic Energy Authority | Other | 9 | £1m | 0.2% | 2024-12-23 |
| Royal Holloway and Bedford New CollegeNew | Other | 5 | £1m | 0.2% | 2026-03-11 |
| Bath Spa University | Other | 5 | £1m | 0.2% | 2024-05-14 |
| Leeds Arts University | Other | 8 | £1m | 0.1% | 2025-11-27 |
| University of ChesterNew | Other | 4 | £1m | 0.1% | 2026-02-16 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 3 | £1m | 0.1% | 2023-08-01 |
| Manchester Metropolitan University | Other | 3 | £1m | 0.1% | 2023-09-23 |
| UNIVERSITY OF EAST ANGLIA | Other | 8 | £1m | 0.1% | 2025-07-25 |
| Driver and Vehicle Licensing AgencyNew | Other | 3 | £994k | 0.1% | 2026-03-30 |
| Offshore Renewable Energy CatapultNew | Other | 3 | £833k | 0.1% | 2026-01-20 |
| UNIVERSITY OF LIVERPOOL | Other | 1 | £700k | 0.1% | 2021-07-29 |
| Solent University | Other | 1 | £691k | 0.1% | 2021-05-04 |
| University of Leeds | Other | 1 | £609k | 0.1% | 2018-08-29 |
| BRUNEL UNIVERSITY LONDONNew | Other | 1 | £609k | 0.1% | 2024-07-01 |
| UNIVERSITY OF NOTTINGHAM (THE) | Other | 3 | £567k | 0.1% | 2022-03-01 |
| LEEDS TRINITY UNIVERSITY | Other | 3 | £555k | 0.1% | 2024-09-12 |
| Coventry University | Other | 3 | £485k | 0.1% | 2025-06-19 |
| University of Lincoln | Other | 2 | £482k | 0.1% | 2024-07-02 |
| Royal Holloway and Bedford New College, known as Royal Holloway, University of London | Other | 5 | £475k | 0.1% | 2023-07-24 |
| LONDON SOUTH BANK UNIVERSITY | Other | 2 | £442k | 0.1% | 2017-08-01 |
| University of Bath | Other | 1 | £437k | 0.1% | 2017-05-19 |
| Cumberland CouncilNew | Other | 3 | £433k | 0.1% | 2026-04-28 |
| University of Central Lancashire | Other | 4 | £393k | 0.1% | 2023-06-20 |
| Office for Students | Other | 7 | £355k | 0.0% | 2026-03-05 |
| Coleg Cambria | Other | 1 | £351k | 0.0% | 2020-06-11 |
| University of Bristol | Other | 6 | £345k | 0.0% | 2025-04-08 |
| UNIVERSITY OF EXETER | Other | 4 | £344k | 0.0% | 2023-12-20 |
| University of EssexNew | Other | 1 | £333k | 0.0% | 2025-10-10 |
| Business Energy and Industrial Strategy | Other | 1 | £309k | 0.0% | 2024-01-22 |
| Nottingham Trent UniversityNew | Other | 2 | £289k | 0.0% | 2025-07-31 |
| Southern HousingNew | Other | 1 | £247k | 0.0% | 2026-03-23 |
| NCG Corporation | Other | 2 | £246k | 0.0% | 2020-11-04 |
| Sheffield Hallam University | Other | 4 | £234k | 0.0% | 2021-06-01 |
| UNIVERSITY OF SALFORD(THE)New | Other | 3 | £232k | 0.0% | 2026-05-01 |
| Durham University | Other | 1 | £230k | 0.0% | 2019-06-30 |
| The National Archives | Other | 8 | £194k | 0.0% | 2026-04-06 |
| University of Hertfordshire | Other | 1 | £189k | 0.0% | 2018-07-04 |
| Board of Trustees of the Royal Botanic Gardens Kew | Other | 1 | £188k | 0.0% | 2022-06-23 |
| University of PlymouthNew | Other | 5 | £180k | 0.0% | 2025-12-31 |
| DSFS c/o Chesterfield Royal Hospital | Other | 1 | £172k | 0.0% | 2023-02-23 |
| The Charity Commission For England And WalesNew | Other | 1 | £165k | 0.0% | 2025-02-28 |
| New City College | Other | 1 | £160k | 0.0% | 2022-09-01 |
| ROYAL HOLLOWAY, UNIVERSITY OF LONDON | Other | 3 | £150k | 0.0% | 2022-07-20 |
| City of London Corporation | Other | 2 | £146k | 0.0% | 2021-06-15 |
| Southampton Solent University | Other | 2 | £127k | 0.0% | 2021-07-23 |
| South Devon College | Other | 2 | £126k | 0.0% | 2016-07-01 |
| Oxford Brookes University | Other | 1 | £116k | 0.0% | 2023-04-18 |
| Activate Learning | Other | 1 | £110k | 0.0% | 2019-07-19 |
| London Borough of Redbridge | Other | 1 | £104k | 0.0% | 2017-07-27 |
| Royal Northern College of Music | Other | 1 | £100k | 0.0% | 2022-03-17 |
| University of Bedfordshire | Other | 1 | £100k | 0.0% | 2022-01-21 |
| Met Office | Other | 2 | £88k | 0.0% | 2024-06-27 |
| THE UNIVERSITY OF CUMBRIA | Other | 1 | £75k | 0.0% | 2023-08-01 |
| TOGETHER HOUSING GROUP LIMITEDNew | Other | 1 | £69k | 0.0% | 2024-11-07 |
| NHS Property Services LimitedNew | Other | 1 | £66k | 0.0% | 2025-05-14 |
| Doncaster College | Other | 1 | £65k | 0.0% | 2021-12-22 |
| Cabinet OfficeNew | Other | 1 | £55k | 0.0% | 2026-02-11 |
| CANTERBURY CHRIST CHURCH UNIVERSITY | Other | 3 | £54k | 0.0% | 2012-05-17 |
| The Pioneer Housing and Community Group Limited | Other | 1 | £53k | 0.0% | 2023-05-26 |
| Financial Ombudsman Service | Other | 1 | £51k | 0.0% | 2024-04-23 |
| LIVERPOOL HOPE UNIVERSITYNew | Other | 1 | £51k | 0.0% | 2026-02-02 |
| City of Doncaster CouncilNew | Other | 2 | £50k | 0.0% | 2024-09-26 |
| HM Land Registry | Other | 2 | £48k | 0.0% | 2019-12-12 |
| UK Atomic Energy AuthorityNew | Other | 1 | £47k | 0.0% | 2025-03-19 |
| NHS North of England CSU | Other | 1 | £47k | 0.0% | 2022-02-07 |
| UNIVERSITY OF THE ARTS LONDON | Other | 1 | £42k | 0.0% | 2015-03-25 |
| NSAH (ALLIANCE HOMES) LIMITED | Other | 1 | £39k | 0.0% | 2024-02-21 |
| RNN GROUP LTD | Other | 1 | £36k | 0.0% | 2022-12-02 |
| Milton Keynes College | Other | 1 | £36k | 0.0% | 2022-08-08 |
| West Herts College | Other | 1 | £20k | 0.0% | 2024-03-07 |
| Parliamentary and Health Service Ombudsman | Other | 1 | £13k | 0.0% | 2023-12-27 |
| Office of Rail and Road | Other | 1 | £13k | 0.0% | 2024-02-20 |
| Luton Sixth Form College | Other | 1 | £6k | 0.0% | 2023-07-25 |
| Newcastle City CouncilNew | Other | 1 | £0k | 0.0% | 2024-10-15 |
| Anglia Ruskin University | Other | 1 | £0k | 0.0% | 2017-04-18 |
| University for the Creative Arts | Other | 1 | £0k | 0.0% | 2017-01-21 |
| Connected Places Catapult | Other | 1 | £0k | 0.0% | |
| DE MONTFORT UNIVERSITY | Other | 2 | £0k | 0.0% | |
| Science Museum Group | Other | 1 | £0k | 0.0% | |
| The Mayor and Commonalty and Citizens of the City of London | Other | 2 | £0k | 0.0% | |
| Sunderland City Council | Other | 1 | £0k | 0.0% | |
| South Tyneside Borough Council | Other | 3 | £0k | 0.0% | |
| Heriot-Watt University | Other | 1 | £0k | 0.0% | |
| the Education Authority | Other | 3 | £0k | 0.0% | |
| Pembrokeshire County Council | Other | 1 | £0k | 0.0% | |
| Cyngor Gwynedd | Other | 1 | £0k | 0.0% | |
| Isle of Anglesey County Council | Other | 1 | £0k | 0.0% | |
| University of the Highlands and Islands | Other | 2 | £0k | 0.0% | |
| Education | Other | 8 | £0k | 0.0% | |
| enFrame CIC | Other | 6 | £0k | 0.0% | |
| University of Portsmouth Higher Education Corporation | Other | 2 | £0k | 0.0% | |
| North Western Universities Purchasing Consortium | Other | 1 | £0k | 0.0% | |
| Public Sector | Other | 2 | £0k | 0.0% | |
| LONDON METROPOLITAN UNIVERSITY | Other | 1 | £0k | 0.0% | |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITED | Other | 1 | £0k | 0.0% | |
| Kent County Council (t/a KCS) | Other | 2 | £0k | 0.0% | |
| NHS London Procurement Partnership | Other | 1 | £0k | 0.0% | |
| Cardiff University/HEPCW | Other | 1 | £0k | 0.0% | |
| Guy's and St Thomas' NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| ulster university | Other | 1 | £0k | 0.0% | |
| Llywodraeth Cymru / Welsh Government | Other | 1 | £0k | 0.0% | |
| Blaenau Gwent County Borough Council | Other | 1 | £0k | 0.0% | |
| Education Authority NI | Other | 1 | £0k | 0.0% | |
| ST MARY'S UNIVERSITY, TWICKENHAM | Other | 1 | £0k | 0.0% | |
| Kent Community Health NHS Foundation Trust | Other | 1 | £0k | 0.0% | |