| Government Commercial AgencyNew | Other | 6 | £5.2bn | 47.1% | 2026-01-05 |
| Crown Commercial Service | Other | 20 | £2.9bn | 26.1% | 2023-08-16 |
| H M REVENUE & CUSTOMS | Other | 10 | £814m | 7.4% | 2025-05-13 |
| NHS England | Other | 7 | £466m | 4.3% | 2025-01-29 |
| Home Office | Other | 25 | £423m | 3.9% | 2026-02-26 |
| Post Office Limited | Other | 10 | £361m | 3.3% | 2026-05-21 |
| NHS Digital | Other | 10 | £153m | 1.4% | 2022-07-19 |
| BANK OF ENGLAND | Other | 17 | £129m | 1.2% | 2026-02-26 |
| DEFRA | Other | 5 | £98m | 0.9% | 2025-01-29 |
| Department for Work & Pensions | Other | 30 | £95m | 0.9% | 2025-11-04 |
| UK Health Security Agency | Other | 6 | £49m | 0.4% | 2023-12-22 |
| Cabinet Office | Other | 8 | £42m | 0.4% | 2025-12-19 |
| STUDENT LOANS COMPANY LIMITED | Other | 2 | £25m | 0.2% | 2021-09-29 |
| N H S Shared Business Services | Other | 3 | £23m | 0.2% | 2024-10-02 |
| Ministry of Housing, Communities & Local GovernmentNew | Other | 1 | £19m | 0.2% | 2025-08-29 |
| NHS Business Services Authority | Other | 1 | £18m | 0.2% | 2023-07-31 |
| Ministry of Defence | Other | 20 | £18m | 0.2% | 2025-06-20 |
| Foreign Commonwealth and Development Office | Other | 1 | £15m | 0.1% | 2018-09-20 |
| Department of Health & Social Care | Other | 6 | £14m | 0.1% | 2024-07-29 |
| Financial Conduct Authority | Other | 3 | £13m | 0.1% | 2022-06-08 |
| Department of Health and Social Care (T&T) | Other | 10 | £13m | 0.1% | 2021-08-05 |
| NHS Supply Chain | Other | 1 | £11m | 0.1% | 2016-11-02 |
| NHS Shared Business Services Ltd (NHS SBS) | Other | 1 | £10m | 0.1% | 2020-05-11 |
| Government Digital ServiceNew | Other | 1 | £10m | 0.1% | 2025-03-01 |
| Department of Health and Social Care (DHSC) | Other | 7 | £9m | 0.1% | 2021-03-24 |
| CPSNew | Other | 3 | £9m | 0.1% | 2024-12-20 |
| National Highways | Other | 6 | £9m | 0.1% | 2024-07-24 |
| The University of Nottingham | Other | 1 | £8m | 0.1% | 2020-06-29 |
| Department for Energy Security & Net ZeroNew | Other | 1 | £6m | 0.1% | 2024-12-09 |
| HM Revenue & Customs | Other | 3 | £5m | 0.0% | 2021-03-26 |
| Department of Health and Social Care (DHSC - Test and Trace) | Other | 2 | £5m | 0.0% | 2020-11-10 |
| Sussex Police | Other | 1 | £5m | 0.0% | 2017-08-23 |
| BBC (British Broadcasting Corporation) | Other | 6 | £4m | 0.0% | 2023-04-01 |
| Medicines and Healthcare Products Regulatory Agency | Other | 2 | £4m | 0.0% | 2022-02-14 |
| Post Office | Other | 8 | £4m | 0.0% | 2025-04-09 |
| Crown Prosecution Service | Other | 1 | £4m | 0.0% | 2018-09-28 |
| DIGITAL DEFENCE LIMITED | Other | 2 | £3m | 0.0% | 2023-11-30 |
| ATAMIS LTD | Other | 2 | £3m | 0.0% | 2021-03-19 |
| HS2 | Other | 1 | £3m | 0.0% | 2021-09-01 |
| Ministry of Justice | Other | 5 | £3m | 0.0% | 2023-11-30 |
| Department of Health and Social Care (T&T) | Other | 5 | £3m | 0.0% | 2021-09-29 |
| National Employment Savings Trust (NEST) | Other | 1 | £2m | 0.0% | 2020-12-17 |
| NHS Resolution | Other | 5 | £1m | 0.0% | 2024-05-15 |
| Department for EducationNew | Other | 1 | £1m | 0.0% | 2025-02-28 |
| The Newcastle Upon Tyne Hospitals NHS Foundation TrustNew | Other | 2 | £1m | 0.0% | 2025-11-12 |
| County Durham and Darlington NHS Foundation TrustNew | Other | 3 | £1m | 0.0% | 2025-05-23 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £1m | 0.0% | 2017-03-01 |
| DfTc - Department for Transport | Other | 2 | £926k | 0.0% | 2024-02-22 |
| Defence Equipment and Support | Other | 2 | £812k | 0.0% | 2025-03-07 |
| City of Bradford Metropolitan District Council | Other | 1 | £800k | 0.0% | 2022-10-17 |
| United Lincolnshire NHS TrustNew | Other | 1 | £600k | 0.0% | 2024-10-14 |
| OfgemNew | Other | 1 | £540k | 0.0% | 2024-08-22 |
| Pension Protection Fund | Other | 2 | £514k | 0.0% | 2026-01-26 |
| NE | Other | 1 | £500k | 0.0% | 2023-04-28 |
| BRAVOSOLUTION UK LIMITED | Other | 1 | £487k | 0.0% | 2023-02-13 |
| ORDNANCE SURVEY LIMITEDNew | Other | 2 | £400k | 0.0% | 2025-07-22 |
| Sussex Partnership NHS Foundation TrustNew | Other | 2 | £391k | 0.0% | 2025-04-28 |
| HM Treasury | Other | 3 | £376k | 0.0% | 2020-10-16 |
| Office for Nuclear Regulation | Other | 1 | £348k | 0.0% | 2024-03-08 |
| BRITISH COUNCIL(THE) | Other | 1 | £327k | 0.0% | 2023-03-17 |
| Nottingham university hospital | Other | 1 | £326k | 0.0% | 2024-04-30 |
| FCDO Services | Other | 1 | £263k | 0.0% | 2020-03-01 |
| NHS Blood and Transplant (NHSBT) | Other | 1 | £250k | 0.0% | 2022-06-24 |
| Student Loans Company | Other | 1 | £250k | 0.0% | 2018-12-10 |
| NHS Arden and Greater East Midlands Commissioning Support UnitNew | Other | 1 | £249k | 0.0% | 2025-09-17 |
| UK Industrial Fusion Solutions LtdNew | Other | 2 | £242k | 0.0% | 2025-11-24 |
| The Princess Alexandra Hospital NHS TrustNew | Other | 2 | £200k | 0.0% | 2025-03-24 |
| Ministry of Defence, C&C, HOCS | Other | 1 | £185k | 0.0% | 2017-02-21 |
| National Highways Limited | Other | 2 | £180k | 0.0% | 2021-06-30 |
| Newcastle University | Other | 1 | £125k | 0.0% | 2017-08-02 |
| MONEY AND PENSIONS SERVICENew | Other | 1 | £120k | 0.0% | 2026-02-24 |
| BROMFORD HOUSING GROUP LIMITEDNew | Other | 1 | £110k | 0.0% | 2024-07-31 |
| Greater Manchester Combined Authority - GMP | Other | 3 | £110k | 0.0% | 2023-02-28 |
| Department for Science, Innovation & Technology | Other | 2 | £110k | 0.0% | 2024-05-09 |
| WRAP (Waste and Resources Action Programme)New | Other | 1 | £100k | 0.0% | 2024-12-02 |
| National Institute for Health and Care Excellence | Other | 1 | £100k | 0.0% | 2024-02-23 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 2 | £85k | 0.0% | 2022-02-25 |
| SATELLITE APPLICATIONS CATAPULT | Other | 1 | £80k | 0.0% | 2022-12-23 |
| Department for Culture, Media and Sport | Other | 1 | £65k | 0.0% | 2017-10-19 |
| University Hospitals Birmingham NHS Foundation TrustNew | Other | 2 | £55k | 0.0% | 2024-07-29 |
| Humberside Fire & Rescue ServiceNew | Other | 1 | £49k | 0.0% | 2024-07-31 |
| British Transport Police | Other | 1 | £41k | 0.0% | 2021-11-23 |
| NNUH | Other | 1 | £23k | 0.0% | 2022-03-29 |
| Scottish Hydro Electric Power Distribution PlcNew | Other | 8 | £0k | 0.0% | 2025-12-22 |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 9 | £0k | 0.0% | |
| SSE plc | Other | 2 | £0k | 0.0% | |
| The Mayor and Commonalty and Citizens of the City of London | Other | 1 | £0k | 0.0% | |
| Northern Ireland Electricity Networks Limited | Other | 4 | £0k | 0.0% | |
| Natural England | Other | 1 | £0k | 0.0% | |
| Waste & Resources Action Programme | Other | 1 | £0k | 0.0% | |
| Mid and South Essex NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| DWR CYMRU CYFYNGEDIG | Other | 2 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 4 | £0k | 0.0% | |
| NHS Litigation Authority | Other | 1 | £0k | 0.0% | |
| GENOMICS ENGLAND LIMITED | Other | 1 | £0k | 0.0% | |
| The Police, Fire and Crime Commissioner for Northamptonshire | Other | 1 | £0k | 0.0% | |
| Department for Transport | Other | 2 | £0k | 0.0% | |
| THAMES WATER UTILITIES LIMITED | Other | 1 | £0k | 0.0% | |
| Network Rail Infrastructure Ltd | Other | 1 | £0k | 0.0% | |
| FCA | Other | 2 | £0k | 0.0% | |
| The Water Services Regulation Authority | Other | 1 | £0k | 0.0% | |
| BLUELIGHT COMMERCIAL LIMITED | Other | 1 | £0k | 0.0% | |
| DESNZ & DSIT Group Commercial | Other | 1 | £0k | 0.0% | |
| UNITED UTILITIES WATER LIMITED | Other | 2 | £0k | 0.0% | |
| NATIONAL GRID UK LIMITED | Other | 1 | £0k | 0.0% | |
| MHRA | Other | 1 | £0k | 0.0% | |