| Leicestershire County Council, trading as ESPONew | Other | 14 | £875m | 49.6% | 2026-04-14 |
| Southend-on-sea Borough Council | Other | 2 | £405m | 23.0% | 2025-05-13 |
| North Somerset Council | Other | 1 | £156m | 8.8% | 2019-07-23 |
| Devon County Council | Other | 3 | £55m | 3.1% | 2025-11-21 |
| Hampshire County Council | Other | 3 | £43m | 2.4% | 2024-07-03 |
| Essex County Council | Other | 1 | £40m | 2.3% | 2017-10-25 |
| North of England Commercial Procurement CollaborativeNew | Other | 1 | £30m | 1.7% | 2025-02-07 |
| Blackburn With Darwen Borough CouncilNew | Other | 3 | £27m | 1.5% | 2026-03-24 |
| South Tyneside Borough CouncilNew | Other | 3 | £18m | 1.0% | 2025-10-17 |
| Lancashire County Council | Other | 8 | £17m | 1.0% | 2025-11-28 |
| UNIVERSITY OF SOUTHAMPTON | Other | 1 | £17m | 1.0% | 2023-02-22 |
| Bracknell Forest Borough CouncilNew | Other | 2 | £16m | 0.9% | 2025-04-29 |
| Walsall CouncilNew | Other | 3 | £14m | 0.8% | 2025-10-24 |
| Department of Health and Social Care (DHSC) | Other | 1 | £12m | 0.7% | 2022-03-29 |
| SOMERSET NHS FOUNDATION TRUST | Other | 5 | £6m | 0.4% | 2026-02-06 |
| London Universities Purchasing Consortium | Other | 2 | £4m | 0.2% | 2023-06-13 |
| Sunderland City Council | Other | 5 | £3m | 0.2% | 2021-06-29 |
| Espo | Other | 8 | £3m | 0.2% | 2021-11-30 |
| Bath and North East Somerset Council | Other | 1 | £2m | 0.1% | 2016-09-07 |
| Newcastle City CouncilNew | Other | 3 | £2m | 0.1% | 2025-04-07 |
| Coventry City Council | Other | 1 | £1m | 0.1% | 2021-08-09 |
| Middlesbrough CouncilNew | Other | 3 | £1m | 0.1% | 2026-02-04 |
| PROCURE PLUS HOLDINGS LIMITED | Other | 2 | £1m | 0.1% | 2019-01-11 |
| Staffordshire County CouncilNew | Other | 13 | £1m | 0.1% | 2026-01-06 |
| University of Sunderland | Other | 2 | £1m | 0.1% | 2024-04-27 |
| Wolverhampton City CouncilNew | Other | 3 | £793k | 0.0% | 2026-02-20 |
| Cumbria County Council | Other | 3 | £792k | 0.0% | 2021-06-18 |
| South West Police Procurement Department (SWPPD) | Other | 1 | £782k | 0.0% | 2020-08-19 |
| UNIVERSITY OF EXETERNew | Other | 1 | £700k | 0.0% | 2024-12-06 |
| London Borough of Sutton | Other | 1 | £700k | 0.0% | 2019-07-11 |
| Wigan Council | Other | 3 | £684k | 0.0% | 2023-08-22 |
| The Police and Crime Commissioner for Avon & SomerseNew | Other | 2 | £652k | 0.0% | 2025-10-01 |
| Warrington Borough Council | Other | 1 | £528k | 0.0% | 2018-12-04 |
| Chorley Council | Other | 5 | £494k | 0.0% | 2023-02-21 |
| South Thames College GroupNew | Other | 1 | £455k | 0.0% | 2025-09-09 |
| CORNWALL EDUCATION LEARNING TRUSTNew | Other | 1 | £444k | 0.0% | 2026-05-01 |
| University of Bristol | Other | 2 | £417k | 0.0% | 2023-03-09 |
| Dorset HealthCare University NHS Foundation Trust | Other | 2 | £417k | 0.0% | 2023-11-02 |
| Stroud District Council | Other | 2 | £356k | 0.0% | 2022-06-13 |
| Dorset Council | Other | 1 | £338k | 0.0% | 2022-09-26 |
| Yorkshire Purchasing Organisation | Other | 1 | £334k | 0.0% | 2023-03-06 |
| Wiltshire CollegeNew | Other | 1 | £320k | 0.0% | 2024-10-16 |
| Aspire Academy TrustNew | Other | 2 | £312k | 0.0% | 2025-03-01 |
| The Christie NHS Foundation Trust | Other | 1 | £310k | 0.0% | 2023-08-01 |
| Lionheart Educational TrustNew | Other | 1 | £232k | 0.0% | 2025-11-11 |
| North Warwickshire and South Leicestershire College | Other | 1 | £215k | 0.0% | 2023-08-10 |
| Truro and Penwith Academy TrustNew | Other | 1 | £209k | 0.0% | 2025-07-09 |
| LIVERPOOL HOPE UNIVERSITY | Other | 1 | £199k | 0.0% | 2016-09-05 |
| University of BedfordshireNew | Other | 2 | £192k | 0.0% | 2025-10-02 |
| Middlesbrough CollegeNew | Other | 1 | £162k | 0.0% | 2025-11-10 |
| Lancashire Fire & Rescue Service | Other | 1 | £128k | 0.0% | 2019-01-29 |
| South Ribble Borough CouncilNew | Other | 1 | £124k | 0.0% | 2025-03-20 |
| Newcastle University | Other | 3 | £121k | 0.0% | 2020-10-14 |
| Havant & South Downs CollegeNew | Other | 1 | £111k | 0.0% | 2025-12-03 |
| Welland Procurement | Other | 1 | £102k | 0.0% | 2018-12-03 |
| Crawley Borough CouncilNew | Other | 1 | £92k | 0.0% | 2025-09-10 |
| South Gloucestershire CouncilNew | Other | 2 | £89k | 0.0% | 2025-07-30 |
| Kent Fire & Rescue Service | Other | 1 | £48k | 0.0% | 2023-10-16 |
| Avon Fire Authority | Other | 1 | £46k | 0.0% | 2020-11-30 |
| Bury College | Other | 2 | £36k | 0.0% | 2024-03-21 |
| Devon & Somerset Fire & Rescue Service | Other | 1 | £31k | 0.0% | 2018-04-18 |
| Devon and Somerset Fire and Rescue Authority | Other | 1 | £30k | 0.0% | 2022-03-22 |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITEDNew | Other | 2 | £0k | 0.0% | 2025-06-16 |
| The Mercian TrustNew | Other | 1 | £0k | 0.0% | 2026-02-16 |
| North Tyneside Borough CouncilNew | Other | 1 | £0k | 0.0% | 2026-01-31 |
| Greenshaw Learning Trust New | Other | 1 | £0k | 0.0% | 2026-01-29 |
| Surrey County Council | Other | 5 | £0k | 0.0% | 2024-03-14 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2021-03-12 |
| University of Northampton e-Tendering | Other | 1 | £0k | 0.0% | 2020-08-21 |
| North Warwickshire & Hinckley Collaborative | Other | 1 | £0k | 0.0% | 2019-07-16 |
| Coventry - Solihull - Warwickshire | Other | 1 | £0k | 0.0% | 2017-08-30 |
| Simply Serve Ltd | Other | 4 | £0k | 0.0% | |
| The Council of the Borough of Stockton-on-Tees Borough Council, The Council of the Borough of Hartlepool ,The Council of the Borough of Middlesbrough, The Council of the Borough of Redcar and Cleveland | 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% | |
| Luton Council | Other | 1 | £0k | 0.0% | |
| Mid and South Essex NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| Greater Manchester Combined Authority - GMP | Other | 2 | £0k | 0.0% | |
| Aberdeenshire Council | Other | 2 | £0k | 0.0% | |
| Bristol Waste Company | Other | 1 | £0k | 0.0% | |
| The Council of the Borough of Milton Keynes | Other | 1 | £0k | 0.0% | |
| University Of The West Of England | Other | 1 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 2 | £0k | 0.0% | |
| Bournemouth Christchurch and Poole Council | Other | 1 | £0k | 0.0% | |
| ENLIGHTEN LEARNING TRUST | Other | 1 | £0k | 0.0% | |
| Flintshire County Council | Other | 1 | £0k | 0.0% | |
| LEODIS ACADEMIES TRUST | Other | 1 | £0k | 0.0% | |
| Leicester City Council | Other | 2 | £0k | 0.0% | |
| Southend City Council | Other | 1 | £0k | 0.0% | |
| Blaenau Gwent County Borough Council | Other | 1 | £0k | 0.0% | |
| Durham County Council | Other | 1 | £0k | 0.0% | |
| YPO | Other | 1 | £0k | 0.0% | |
| City College Southampton | Other | 1 | £0k | 0.0% | |
| Dumfries and Galloway Council | Other | 1 | £0k | 0.0% | |
| Cirrus Consortium C/O Plus Dane Housing | Other | 1 | £0k | 0.0% | |
| Southend-on-Sea City Council | Other | 1 | £0k | 0.0% | |
| North of England Commercial Procurement Collaborative (NOE CPC) | Other | 2 | £0k | 0.0% | |
| West Yorkshire Fire and Rescue Service | Other | 1 | £0k | 0.0% | |
| Lancashire Teaching Hospitals NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Exeter City Council | Other | 1 | £0k | 0.0% | |
| Royal Borough of Kingston Upon Thames | Other | 2 | £0k | 0.0% | |