| Crown Commercial Service | Other | 3 | £15.1bn | 61.9% | 2025-07-17 |
| Ministry of Justice | Other | 2 | £2.3bn | 9.4% | 2025-01-07 |
| Ministry of Defence | Other | 4 | £1.7bn | 7.2% | 2025-12-19 |
| Department for Work & Pensions | Other | 2 | £1.4bn | 5.6% | 2025-07-11 |
| DEFRANew | Other | 2 | £739m | 3.0% | 2025-01-14 |
| NUCLEAR DECOMMISSIONING AUTHORITY | Other | 4 | £636m | 2.6% | 2025-12-03 |
| Network Rail Ltd | Other | 1 | £427m | 1.8% | 2020-09-18 |
| UK Health Security Agency | Other | 1 | £406m | 1.7% | 2022-03-24 |
| YPO | Other | 4 | £278m | 1.1% | 2024-02-13 |
| Cabinet Office | Other | 1 | £240m | 1.0% | 2018-06-18 |
| BANK OF ENGLAND | Other | 2 | £173m | 0.7% | 2025-06-12 |
| Foreign Commonwealth and Development Office | Other | 2 | £151m | 0.6% | 2026-01-30 |
| Department for Education | Other | 3 | £108m | 0.4% | 2025-04-03 |
| Government Legal Department | Other | 1 | £79m | 0.3% | 2018-06-16 |
| Homes England (the name adopted by the Homes and Communities Agency) | Other | 3 | £75m | 0.3% | 2025-10-31 |
| Companies HouseNew | Other | 1 | £72m | 0.3% | 2025-05-07 |
| Department of Health & Social Care | Other | 1 | £55m | 0.2% | 2018-01-16 |
| Intellectual Property OfficeNew | Other | 1 | £52m | 0.2% | 2025-03-31 |
| The Insolvency Service | Other | 2 | £48m | 0.2% | 2025-07-07 |
| UKHSANew | Other | 1 | £40m | 0.2% | 2025-07-21 |
| HM Treasury | Other | 2 | £40m | 0.2% | 2026-01-08 |
| Metropolitan Police ServiceNew | Other | 1 | £28m | 0.1% | 2026-03-24 |
| Home Office | Other | 20 | £23m | 0.1% | 2025-05-01 |
| NHS Business Services AuthorityNew | Other | 1 | £20m | 0.1% | 2025-06-13 |
| NHS Digital | Other | 2 | £20m | 0.1% | 2020-01-27 |
| Department of Health and Social Care (DHSC)New | Other | 1 | £18m | 0.1% | 2025-06-06 |
| NHS England | Other | 2 | £15m | 0.1% | 2025-07-15 |
| Care Quality CommissionNew | Other | 1 | £15m | 0.1% | 2025-04-03 |
| Valuation Office Agency | Other | 2 | £14m | 0.1% | 2024-10-17 |
| Radioactive Waste Management Limited | Other | 145 | £13m | 0.1% | 2022-03-31 |
| HM Land Registry | Other | 1 | £12m | 0.1% | 2018-06-11 |
| GOVERNMENT PROPERTY AGENCYNew | Other | 1 | £10m | 0.0% | 2025-03-05 |
| STUDENT LOANS COMPANY LIMITED | Other | 1 | £8m | 0.0% | 2018-06-06 |
| The Office for Standards in Education, Children's Services and SkillsNew | Other | 1 | £7m | 0.0% | 2024-12-10 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £6m | 0.0% | 2018-06-17 |
| Medicines and Healthcare Products Regulatory AgencyNew | Other | 1 | £6m | 0.0% | 2025-05-02 |
| MHRA | Other | 1 | £6m | 0.0% | 2018-07-01 |
| Student Loans CompanyNew | Other | 2 | £5m | 0.0% | 2026-03-04 |
| MONEY AND PENSIONS SERVICENew | Other | 1 | £5m | 0.0% | 2025-03-17 |
| Nuclear Restoration ServicesNew | Other | 10 | £4m | 0.0% | 2026-04-15 |
| Health Research AuthorityNew | Other | 1 | £3m | 0.0% | 2025-04-04 |
| ATAMIS LTD | Other | 5 | £2m | 0.0% | 2021-10-01 |
| Sport England | Other | 1 | £2m | 0.0% | 2022-11-14 |
| Pension Protection Fund | Other | 2 | £2m | 0.0% | 2025-12-09 |
| National Highways Limited | Other | 1 | £2m | 0.0% | 2018-09-10 |
| Department for International Trade | Other | 2 | £1m | 0.0% | 2019-06-04 |
| Greater Manchester Combined AuthorityNew | Other | 1 | £840k | 0.0% | 2025-05-27 |
| Board of Trustees of the Royal Botanic Gardens Kew | Other | 2 | £600k | 0.0% | 2025-03-04 |
| UK Hydrographic Office | Other | 2 | £571k | 0.0% | 2026-04-13 |
| Nuclear Restoration Services LtdNew | Other | 2 | £526k | 0.0% | 2026-04-22 |
| UK INFRASTRUCTURE BANK LIMITED | Other | 1 | £500k | 0.0% | 2024-01-16 |
| CPS | Other | 1 | £500k | 0.0% | 2018-07-30 |
| Government Internal Audit Agency | Other | 6 | £353k | 0.0% | 2021-03-31 |
| Lancashire County Council | Other | 3 | £306k | 0.0% | 2024-04-26 |
| United Kingdom Hydrographic Office | Other | 4 | £253k | 0.0% | 2018-07-20 |
| SERIOUS FRAUD OFFICE | Other | 2 | £215k | 0.0% | 2025-09-01 |
| Bath and North East Somerset CouncilNew | Other | 1 | £150k | 0.0% | 2025-12-04 |
| Bristol City Council | Other | 1 | £100k | 0.0% | 2023-11-06 |
| Equality and Human Rights Commission | Other | 1 | £100k | 0.0% | 2018-06-15 |
| NHS Counter Fraud AuthorityNew | Other | 1 | £80k | 0.0% | 2025-07-17 |
| CENTRE FOR ENVIRONMENT, FISHERIES AND AQUACULTURE SCIENCENew | Other | 1 | £70k | 0.0% | 2026-01-02 |
| Ambulance Radio Programme (ARP) | Other | 1 | £61k | 0.0% | 2021-09-01 |
| NHS Improvements | Other | 1 | £38k | 0.0% | 2020-06-23 |
| NHS Arden and GEM CSU | Other | 1 | £29k | 0.0% | 2021-12-01 |
| Food Standards AgencyNew | Other | 1 | £6k | 0.0% | 2025-03-17 |
| UK Export FinanceNew | Other | 1 | £0k | 0.0% | 2025-05-29 |
| FCDO Services | Other | 2 | £0k | 0.0% | 2025-05-16 |
| Information Commissioner's Office | Other | 1 | £0k | 0.0% | 2022-09-08 |
| LIVESTOCK INFORMATION LIMITED | Other | 1 | £0k | 0.0% | 2021-06-07 |
| UK Atomic Energy Authority | Other | 1 | £0k | 0.0% | |
| Chiltern Rail Limited | Other | 1 | £0k | 0.0% | |
| Greater Manchester Combined Authority - GMP | Other | 1 | £0k | 0.0% | |
| North Yorkshire County Council | Other | 1 | £0k | 0.0% | |
| South Yorkshire Mayoral Combined Authority | Other | 1 | £0k | 0.0% | |
| Suffolk County Council | Other | 1 | £0k | 0.0% | |
| Sellafield | Other | 1 | £0k | 0.0% | |