| Llywodraeth Cymru / Welsh GovernmentNew | Other | 3 | £140m | 40.1% | 2026-02-25 |
| Crown Commercial Service | Other | 6 | £25m | 7.2% | 2025-05-06 |
| Metropolitan Police ServiceNew | Other | 2 | £25m | 7.2% | 2025-07-24 |
| Halton Housing c/o Link GroupNew | Other | 2 | £23m | 6.6% | 2025-01-21 |
| H M REVENUE & CUSTOMS | Other | 3 | £15m | 4.4% | 2026-04-29 |
| DfTc - Department for Transport | Other | 1 | £15m | 4.3% | 2023-02-02 |
| BBC (British Broadcasting Corporation) | Other | 2 | £15m | 4.3% | 2021-12-09 |
| Sellafield LtdNew | Other | 2 | £11m | 3.1% | 2026-03-02 |
| Environment Agency (Defra Group)New | Other | 1 | £10m | 2.8% | 2025-10-13 |
| Environment AgencyNew | Other | 1 | £10m | 2.7% | 2024-10-31 |
| Espo | Other | 9 | £9m | 2.5% | 2025-01-20 |
| East Riding of Yorkshire CouncilNew | Other | 1 | £9m | 2.5% | 2025-05-29 |
| DEFRA | Other | 1 | £7m | 2.0% | 2022-02-12 |
| West Yorkshire Combined Authority | Other | 2 | £5m | 1.3% | 2026-03-25 |
| Leicestershire County Council | Other | 1 | £3m | 0.8% | 2021-12-15 |
| COLLEGE OF POLICING LIMITED | Other | 2 | £2m | 0.6% | 2025-05-20 |
| The Office for Standards in Education, Children's Services and SkillsNew | Other | 1 | £2m | 0.6% | 2024-10-01 |
| NTW Solutions Ltd | Other | 2 | £2m | 0.5% | 2025-06-01 |
| Commercial Services Kent LimitedNew | Other | 6 | £2m | 0.5% | 2025-05-20 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 4 | £2m | 0.5% | 2025-05-01 |
| Health & Safety ExecutiveNew | Other | 1 | £1m | 0.3% | 2024-06-07 |
| Department for Education | Other | 1 | £1m | 0.3% | 2022-12-12 |
| Norfolk County CouncilNew | Other | 1 | £1m | 0.3% | 2025-06-05 |
| Met OfficeNew | Other | 2 | £981k | 0.3% | 2025-02-05 |
| NHS Blood and Transplant (NHSBT)New | Other | 1 | £881k | 0.3% | 2024-08-20 |
| Derbyshire County Council | Other | 1 | £800k | 0.2% | 2016-02-15 |
| MCA - Maritime and Coastguard Agency | Other | 1 | £670k | 0.2% | 2020-12-01 |
| NHS Business Services AuthorityNew | Other | 1 | £663k | 0.2% | 2024-11-28 |
| Ofsted | Other | 1 | £638k | 0.2% | 2021-03-26 |
| Care Quality Commission | Other | 3 | £593k | 0.2% | 2024-01-08 |
| UK Health Security Agency | Other | 3 | £566k | 0.2% | 2024-04-18 |
| Manchester City Council | Other | 2 | £564k | 0.2% | 2022-08-16 |
| West Northamptonshire Council | Other | 2 | £493k | 0.1% | 2025-01-15 |
| Bristol City Council | Other | 2 | £460k | 0.1% | 2025-09-30 |
| West Sussex County Council | Other | 1 | £460k | 0.1% | 2022-08-22 |
| NHS Supply Chain Coordination | Other | 1 | £450k | 0.1% | 2023-09-29 |
| ICS on behalf of DSIT and DESNZNew | Other | 1 | £400k | 0.1% | 2025-12-10 |
| Ordnance SurveyNew | Other | 1 | £400k | 0.1% | 2025-03-17 |
| Department for Business & TradeNew | Other | 2 | £395k | 0.1% | 2026-05-05 |
| YORK AND SCARBOROUGH TEACHING HOSPITALS NHS FOUNDATION TRUST | Other | 1 | £350k | 0.1% | 2022-11-30 |
| VICO HOMES LIMITEDNew | Other | 1 | £336k | 0.1% | 2025-09-29 |
| Lincolnshire County Council | Other | 1 | £320k | 0.1% | 2022-03-03 |
| Rotherham MBC | Other | 1 | £313k | 0.1% | 2018-08-13 |
| Welland Procurement Unit | Other | 1 | £293k | 0.1% | 2018-02-07 |
| Solent NHS Trust | Other | 1 | £280k | 0.1% | 2023-02-02 |
| National HighwaysNew | Other | 1 | £257k | 0.1% | 2024-06-17 |
| Historic England | Other | 1 | £250k | 0.1% | 2024-03-22 |
| Stoke-on-Trent City Council | Other | 18 | £250k | 0.1% | 2023-08-21 |
| The Queen Elizabeth Hospital King's Lynn NHS Foundation Trust | Other | 1 | £236k | 0.1% | 2022-03-31 |
| Devon & Somerset Fire & Rescue Service | Other | 1 | £220k | 0.1% | 2015-05-20 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITEDNew | Other | 1 | £200k | 0.1% | 2025-11-05 |
| Westmorland and Furness CouncilNew | Other | 1 | £180k | 0.1% | 2024-05-31 |
| London Ambulance Service NHS Trust | Other | 1 | £180k | 0.1% | 2024-04-01 |
| Stockport Metropolitan Borough Council | Other | 2 | £177k | 0.1% | 2022-08-02 |
| Nottingham Trent UniversityNew | Other | 1 | £170k | 0.0% | 2026-01-08 |
| Cambridgeshire County CouncilNew | Other | 1 | £170k | 0.0% | 2024-06-05 |
| St Helens CouncilNew | Other | 1 | £158k | 0.0% | 2024-07-01 |
| Greater Manchester Combined Authority - Greater Manchester Police | Other | 1 | £150k | 0.0% | 2024-05-23 |
| Wakefield and District Housing | Other | 1 | £150k | 0.0% | 2018-04-24 |
| DERBY CITY COUNCIL | Other | 2 | £125k | 0.0% | 2018-01-31 |
| Food Standards Agency | Other | 2 | £110k | 0.0% | 2024-12-03 |
| Department for International Trade | Other | 1 | £110k | 0.0% | 2024-05-03 |
| East Riding of Yorkshire | Other | 1 | £110k | 0.0% | 2019-03-18 |
| Suffolk Coastal District Council and Waveney District CouncilNew | Other | 1 | £100k | 0.0% | 2025-12-16 |
| UK ParliamentNew | Other | 1 | £100k | 0.0% | 2024-06-03 |
| North Northamptonshire Council | Other | 1 | £100k | 0.0% | 2024-05-17 |
| University of Brighton | Other | 1 | £90k | 0.0% | 2023-01-19 |
| Independent Police Complaints Commission | Other | 1 | £90k | 0.0% | 2016-10-04 |
| Bromsgrove District Council | Other | 2 | £87k | 0.0% | 2025-12-17 |
| Magnox Limited | Other | 1 | £86k | 0.0% | 2023-03-27 |
| Northumbria Healthcare NHS Foundation TrustNew | Other | 1 | £76k | 0.0% | 2025-12-23 |
| Greater Manchester Combined Authority - GMP | Other | 2 | £75k | 0.0% | 2025-10-09 |
| HISTORIC ENGLAND LIMITED | Other | 1 | £75k | 0.0% | 2022-11-01 |
| Department for Work & Pensions | Other | 1 | £75k | 0.0% | 2017-07-13 |
| Competition and Markets Authority | Other | 2 | £71k | 0.0% | 2024-03-17 |
| Homes England (the name adopted by the Homes and Communities Agency)New | Other | 1 | £64k | 0.0% | 2025-10-01 |
| UNIVERSITY OF SHEFFIELDNew | Other | 1 | £60k | 0.0% | 2024-11-30 |
| Redditch Borough Council | Other | 1 | £57k | 0.0% | 2022-06-09 |
| Driver and Vehicle Licensing Agency | Other | 1 | £50k | 0.0% | 2021-06-25 |
| UNIVERSITY OF DERBY | Other | 1 | £48k | 0.0% | 2023-09-27 |
| City of London Corporation | Other | 1 | £43k | 0.0% | 2023-10-01 |
| Torbay Council | Other | 1 | £42k | 0.0% | 2023-04-27 |
| University of Central Lancashire | Other | 1 | £40k | 0.0% | 2023-06-28 |
| Salisbury NHS FT | Other | 1 | £40k | 0.0% | 2024-04-18 |
| Office of Qualifications and Examinations Regulation (Ofqual)New | Other | 1 | £34k | 0.0% | 2025-04-01 |
| HM Treasury | Other | 1 | £33k | 0.0% | 2023-01-31 |
| Cheshire West and Chester Council | Other | 1 | £31k | 0.0% | 2022-02-01 |
| Kent Fire & Rescue Service | Other | 1 | £30k | 0.0% | 2022-03-03 |
| The National Archives | Other | 1 | £24k | 0.0% | 2024-02-07 |
| Wiltshire Fire And Rescue Service | Other | 1 | £19k | 0.0% | 2021-10-27 |
| Independent Commission for Reconciliation and Information Recovery | Other | 1 | £10k | 0.0% | |
| University of BristolNew | Other | 1 | £0k | 0.0% | 2026-03-01 |
| Defence Science and Technology LaboratoryNew | Other | 1 | £0k | 0.0% | 2025-09-11 |
| FCDO Services | Other | 2 | £0k | 0.0% | 2025-03-04 |
| Valuation Office Agency | Other | 1 | £0k | 0.0% | 2016-07-16 |
| Watford Community Housing | Other | 1 | £0k | 0.0% | |
| Police And Crime Commissioner For Durham | Other | 2 | £0k | 0.0% | |
| Swansea University | Other | 2 | £0k | 0.0% | |
| THAMES WATER UTILITIES LIMITED | Other | 1 | £0k | 0.0% | |
| City Building (Glasgow) LLP | Other | 1 | £0k | 0.0% | |
| Bath and North East Somerset Council | Other | 1 | £0k | 0.0% | |
| Portsmouth Water Limited | Other | 1 | £0k | 0.0% | |
| Aberdeen City Council | Other | 1 | £0k | 0.0% | |
| South East Coast Ambulance Service NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| SSE plc | Other | 1 | £0k | 0.0% | |
| Highlands and Islands Airports Limited | Other | 1 | £0k | 0.0% | |
| East Midlands International Airport Limited | Other | 1 | £0k | 0.0% | |
| North Western Universities Purchasing Consortium | Other | 1 | £0k | 0.0% | |
| Nuclear Restoration Services Limited | Other | 1 | £0k | 0.0% | |