| Cardiff CouncilNew | Other | 2 | £800m | 31.3% | 2026-03-31 |
| YPO | Other | 9 | £369m | 14.4% | 2024-02-13 |
| Royal Borough of Kingston Upon Thames | Other | 3 | £184m | 7.2% | 2024-09-26 |
| Espo | Other | 5 | £157m | 6.1% | 2019-03-19 |
| capitalEsourcing | Other | 3 | £155m | 6.1% | 2024-07-24 |
| London Borough of Enfield | Other | 1 | £98m | 3.8% | 2023-01-02 |
| Nottinghamshire County Council | Other | 1 | £80m | 3.1% | 2023-12-14 |
| SE Shared Services | Other | 1 | £72m | 2.8% | 2020-11-20 |
| Somerset County Council | Other | 1 | £60m | 2.3% | 2023-01-27 |
| Essex County Council | Other | 4 | £58m | 2.3% | 2023-04-19 |
| Liverpool City Council | Other | 2 | £56m | 2.2% | 2022-10-07 |
| London Borough of Bromley | Other | 1 | £50m | 2.0% | 2020-07-17 |
| Thurrock Borough Council - Anti Social Behaviour | Other | 1 | £42m | 1.6% | 2023-12-12 |
| Central Bedfordshire Council | Other | 1 | £35m | 1.4% | 2021-07-13 |
| DERBY CITY COUNCIL | Other | 6 | £35m | 1.4% | 2019-12-18 |
| Borough Council of Calderdale | Other | 1 | £33m | 1.3% | 2016-07-28 |
| Nottingham City Council | Other | 2 | £31m | 1.2% | 2023-04-01 |
| North Somerset Council | Other | 1 | £30m | 1.2% | 2020-03-16 |
| University of Central Lancashire | Other | 1 | £20m | 0.8% | 2021-09-07 |
| North Yorkshire County Council | Other | 1 | £16m | 0.6% | 2022-09-07 |
| Halton Borough Council | Other | 1 | £16m | 0.6% | 2022-03-28 |
| Yorkshire Purchasing OrganisationNew | Other | 1 | £15m | 0.6% | 2025-06-26 |
| Shropshire Council | Other | 1 | £14m | 0.5% | 2018-09-03 |
| Knowsley Council | Other | 1 | £12m | 0.5% | 2022-04-13 |
| Wokingham Borough Council | Other | 1 | £12m | 0.5% | 2019-10-15 |
| London Borough of HillingdonNew | Other | 3 | £11m | 0.4% | 2025-10-23 |
| CIRRUS PURCHASING LTDNew | Other | 1 | £10m | 0.4% | 2025-08-27 |
| Runnymede Borough Council | Other | 2 | £10m | 0.4% | 2025-05-20 |
| DONCASTER CHILDREN'S SERVICES TRUST LIMITED | Other | 1 | £10m | 0.4% | 2021-12-17 |
| Kingston Upon Hull City Council | Other | 1 | £9m | 0.4% | 2018-10-10 |
| Royal Holloway and Bedford New College, known as Royal Holloway, University of London | Other | 1 | £8m | 0.3% | 2018-11-28 |
| Rotherham Metropolitan Borough Council | Other | 2 | £7m | 0.3% | 2025-02-27 |
| Sutton Housing Partnership | Other | 2 | £7m | 0.3% | 2026-04-22 |
| WAKEFIELD COUNCIL | Other | 1 | £6m | 0.2% | 2016-10-11 |
| Royal Holloway and Bedford New College | Other | 1 | £5m | 0.2% | 2024-03-25 |
| DONCASTER CHILDREN'S SERVICES TRUST LIMITED | Other | 3 | £5m | 0.2% | 2020-12-17 |
| Broxtowe Borough Council | Other | 1 | £4m | 0.2% | 2023-03-01 |
| Met OfficeNew | Other | 1 | £3m | 0.1% | 2025-01-23 |
| Financial Ombudsman ServiceNew | Other | 1 | £3m | 0.1% | 2025-03-11 |
| London Borough of Hammersmith & FulhamNew | Other | 3 | £2m | 0.1% | 2025-12-16 |
| London Borough of Hounslow | Other | 10 | £2m | 0.1% | 2024-10-18 |
| Bedford Borough Council | Other | 3 | £2m | 0.1% | 2023-02-01 |
| Epsom & Ewell Borough Council | Other | 1 | £1m | 0.0% | 2020-07-31 |
| Elmbridge Borough Council | Other | 1 | £956k | 0.0% | 2023-01-06 |
| UNIVERSITY OF KEELENew | Other | 3 | £933k | 0.0% | 2025-09-25 |
| Welland Procurement Unit | Other | 1 | £750k | 0.0% | 2017-05-26 |
| Denbighshire County CouncilNew | Other | 1 | £610k | 0.0% | 2025-04-10 |
| West Sussex County Council | Other | 1 | £423k | 0.0% | 2023-02-21 |
| Preston City Council | Other | 1 | £400k | 0.0% | 2023-01-15 |
| London Borough of Hackney | Other | 1 | £400k | 0.0% | 2021-02-15 |
| Daventry District Council | Other | 1 | £400k | 0.0% | 2016-01-29 |
| Royal Borough of Greenwich | Other | 1 | £300k | 0.0% | 2016-04-25 |
| HIGHTOWN HOUSING ASSOCIATION LIMITEDNew | Other | 1 | £200k | 0.0% | 2025-06-05 |
| Leicestershire PoliceNew | Other | 1 | £138k | 0.0% | 2025-10-05 |
| UK RESEARCH & INNOVATION | Other | 1 | £120k | 0.0% | 2022-08-31 |
| Kent & Essex ConstabulariesNew | Other | 1 | £108k | 0.0% | 2024-07-23 |
| Swale Borough Council | Other | 1 | £90k | 0.0% | 2021-12-03 |
| Kent PoliceNew | Other | 1 | £75k | 0.0% | 2024-10-03 |
| Telford & Wrekin Council | Other | 1 | £0k | 0.0% | 2019-12-30 |
| Crown Commercial Service | Other | 1 | £0k | 0.0% | 2015-06-23 |
| London Borough of Camden | Other | 1 | £0k | 0.0% | |
| NHS Blood and Transplant (NHSBT) | Other | 1 | £0k | 0.0% | |
| Isle of Wight Council | Other | 1 | £0k | 0.0% | |
| Mid and South Essex NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Cirrus Consortium c/o Halton Housing | Other | 2 | £0k | 0.0% | |
| Westminster City Council | Other | 1 | £0k | 0.0% | |
| Welsh Government - Commercial Delivery | Other | 2 | £0k | 0.0% | |
| Financial Ombudsman Service Limited | Other | 1 | £0k | 0.0% | |
| Cyngor Sir Ceredigion County Council | Other | 1 | £0k | 0.0% | |
| Caerphilly County Borough Council | Other | 1 | £0k | 0.0% | |
| THE MANCHESTER SHIP CANAL COMPANY LIMITED | Other | 1 | £0k | 0.0% | |
| London Borough of Haringey | Other | 1 | £0k | 0.0% | |
| Education | Other | 2 | £0k | 0.0% | |