| Cabinet Office | Other | 4 | £26m | 14.3% | 2022-05-30 |
| Espo | Other | 2 | £25m | 13.7% | 2017-09-11 |
| NEUPC Ltd | Other | 1 | £17m | 9.4% | 2017-08-29 |
| Crown Commercial Service | Other | 4 | £14m | 7.4% | 2025-06-30 |
| East Midlands Strategic Commercial Unit (EMSCU) | Other | 1 | £13m | 6.8% | 2019-06-13 |
| Home Office | Other | 7 | £11m | 6.1% | 2025-06-19 |
| Ministry of Defence | Other | 8 | £8m | 4.5% | 2026-04-23 |
| Coventry City Council | Other | 3 | £7m | 3.7% | 2026-01-13 |
| H M REVENUE & CUSTOMS | Other | 7 | £5m | 2.8% | 2025-10-13 |
| BANK OF ENGLAND | Other | 4 | £5m | 2.6% | 2024-08-07 |
| Met Office | Other | 6 | £5m | 2.6% | 2023-01-30 |
| Department for Culture, Media and Sport | Other | 6 | £4m | 2.1% | 2026-04-23 |
| Birmingham City Council | Other | 2 | £3m | 1.4% | 2024-01-18 |
| Department for Education | Other | 11 | £2m | 1.2% | 2025-11-27 |
| National Highways Limited | Other | 2 | £2m | 1.1% | 2022-09-15 |
| DEFRA | Other | 5 | £2m | 1.1% | 2024-08-06 |
| Office for National Statistics | Other | 2 | £2m | 1.1% | 2024-05-07 |
| NUCLEAR DECOMMISSIONING AUTHORITY | Other | 1 | £2m | 1.1% | 2019-09-23 |
| NHS Shared Business Services Ltd (NHS SBS) | Other | 1 | £2m | 1.0% | 2021-06-23 |
| Ministry of JusticeNew | Other | 4 | £2m | 1.0% | 2024-07-26 |
| BBC (British Broadcasting Corporation) | Other | 5 | £1m | 0.7% | 2020-09-18 |
| FCDO Services | Other | 7 | £1m | 0.7% | 2025-07-15 |
| General Medical Council (GMC) | Other | 6 | £1m | 0.7% | 2021-06-04 |
| Department for Work & Pensions | Other | 5 | £1m | 0.6% | 2026-03-18 |
| DVSA - Driver and Vehicle Standards Agency | Other | 7 | £1m | 0.6% | 2025-12-01 |
| Competition and Markets Authority | Other | 2 | £966k | 0.5% | 2024-03-18 |
| Lancashire County Council | Other | 6 | £942k | 0.5% | 2025-04-11 |
| Corporate Officer of the House of CommonsNew | Other | 1 | £850k | 0.5% | 2025-10-13 |
| Intellectual Property Office | Other | 2 | £846k | 0.5% | 2019-09-12 |
| ATAMIS LTD | Other | 2 | £800k | 0.4% | 2021-02-19 |
| Department for Science, Innovation & TechnologyNew | Other | 1 | £798k | 0.4% | 2024-08-01 |
| ICS on behalf of DSIT and DESNZNew | Other | 3 | £786k | 0.4% | 2026-04-22 |
| NHS Supply Chain CoordinationNew | Other | 1 | £743k | 0.4% | 2024-10-14 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 5 | £652k | 0.4% | 2024-03-13 |
| BRITISH COUNCIL(THE) | Other | 1 | £600k | 0.3% | 2023-08-15 |
| Suffolk County Council | Other | 4 | £589k | 0.3% | 2023-10-08 |
| Oldham Council | Other | 2 | £540k | 0.3% | 2024-04-23 |
| Department for International Trade | Other | 1 | £456k | 0.2% | 2021-09-17 |
| National Highways | Other | 2 | £450k | 0.2% | 2024-04-12 |
| Leeds City Council | Other | 3 | £438k | 0.2% | 2020-07-27 |
| POLICE DIGITAL SERVICENew | Other | 2 | £410k | 0.2% | 2025-11-27 |
| NHS Business Services Authority | Other | 16 | £403k | 0.2% | 2026-02-05 |
| Cumbria County Council | Other | 1 | £400k | 0.2% | 2018-02-01 |
| Police, Fire & Crime Commissioner for StaffordshireNew | Other | 2 | £380k | 0.2% | 2026-05-01 |
| Tower Hamlets | Other | 2 | £360k | 0.2% | 2019-01-17 |
| East Riding of Yorkshire Council | Other | 5 | £311k | 0.2% | 2024-04-29 |
| East Sussex County Council | Other | 1 | £300k | 0.2% | 2023-08-23 |
| University of Leeds | Other | 1 | £300k | 0.2% | 2016-10-09 |
| Information Commissioner's Office | Other | 2 | £276k | 0.2% | 2024-03-11 |
| Durham Constabulary | Other | 1 | £260k | 0.1% | 2022-04-01 |
| Sunderland City Council | Other | 2 | £245k | 0.1% | 2020-08-25 |
| NHS BSA | Other | 3 | £233k | 0.1% | 2024-06-24 |
| Financial Conduct Authority | Other | 1 | £226k | 0.1% | 2021-03-14 |
| British Business Bank | Other | 1 | £210k | 0.1% | 2024-05-01 |
| GREATER MANCHESTER EDUCATION TRUST | Other | 2 | £200k | 0.1% | 2023-09-20 |
| Parliament UK | Other | 2 | £195k | 0.1% | 2017-01-01 |
| The House of Lords | Other | 1 | £195k | 0.1% | 2016-12-22 |
| North Bristol NHS Trust | Other | 1 | £189k | 0.1% | |
| UK | Other | 1 | £180k | 0.1% | 2022-05-23 |
| Historic England | Other | 2 | £162k | 0.1% | 2018-04-02 |
| NHS England | Other | 3 | £156k | 0.1% | 2025-08-04 |
| GENOMICS ENGLAND LIMITEDNew | Other | 1 | £150k | 0.1% | 2025-03-27 |
| Intellectual PropertyOffice | Other | 1 | £150k | 0.1% | 2023-08-16 |
| National Nuclear Laboratory | Other | 1 | £150k | 0.1% | 2023-08-15 |
| Independent Office for Police Conduct | Other | 2 | £150k | 0.1% | 2020-01-30 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 5 | £140k | 0.1% | 2025-05-22 |
| Stockton Borough CouncilNew | Other | 1 | £140k | 0.1% | 2024-08-12 |
| County Durham and Darlington NHS Foundation Trust | Other | 3 | £138k | 0.1% | 2024-11-22 |
| Bristol City Council | Other | 1 | £133k | 0.1% | 2018-05-10 |
| Staffordshire Police | Other | 2 | £124k | 0.1% | 2023-03-20 |
| Sussex PoliceNew | Other | 1 | £123k | 0.1% | 2024-06-27 |
| The Police and Crime Commissioner for NottinghamshireNew | Other | 1 | £120k | 0.1% | 2025-03-21 |
| CPSNew | Other | 1 | £120k | 0.1% | 2025-02-03 |
| Liverpool City Council | Other | 1 | £113k | 0.1% | 2020-08-18 |
| Yorkshire & Humber Police Procurement | Other | 1 | £105k | 0.1% | 2018-04-20 |
| Crown Prosecution Service | Other | 1 | £100k | 0.1% | 2019-07-08 |
| Ambulance Radio Programme (ARP) | Other | 2 | £100k | 0.1% | 2017-03-16 |
| West Northamptonshire CouncilNew | Other | 2 | £99k | 0.1% | 2025-10-13 |
| Financial Ombudsman Service | Other | 1 | £95k | 0.1% | 2023-01-18 |
| HEE | Other | 4 | £95k | 0.1% | 2021-11-23 |
| LLW REPOSITORY LIMITED | Other | 1 | £90k | 0.0% | 2022-09-16 |
| HM Land Registry | Other | 1 | £90k | 0.0% | 2022-06-13 |
| Surrey and Borders Partnership NHS Foundation Trust | Other | 3 | £85k | 0.0% | 2024-09-27 |
| Leicestershire Police | Other | 2 | £81k | 0.0% | 2024-05-01 |
| Midlands & Lancashire C S U | Other | 2 | £80k | 0.0% | 2023-07-14 |
| Nuclear Restoration Services LimitedNew | Other | 2 | £80k | 0.0% | 2025-02-14 |
| General Medical Council | Other | 1 | £80k | 0.0% | 2017-05-01 |
| Derbyshire County Council | Other | 2 | £78k | 0.0% | 2023-01-10 |
| Sandwell Metropolitan Borough Council | Other | 10 | £78k | 0.0% | 2026-03-24 |
| National Audit Office | Other | 1 | £75k | 0.0% | 2024-04-26 |
| Joint Procurement Service for Surrey and Sussex Police | Other | 1 | £75k | 0.0% | 2023-11-24 |
| Wolverhampton City Council | Other | 1 | £75k | 0.0% | 2023-08-15 |
| Northern Trains Limited | Other | 1 | £75k | 0.0% | 2023-03-23 |
| Hampshire County CouncilNew | Other | 4 | £74k | 0.0% | 2025-11-03 |
| Nursing And Midwifery Council | Other | 2 | £69k | 0.0% | 2023-03-27 |
| NCG Corporation | Other | 2 | £69k | 0.0% | 2021-08-19 |
| Bromsgrove District CouncilNew | Other | 1 | £68k | 0.0% | 2025-02-13 |
| NHS Shared Business Services | Other | 1 | £67k | 0.0% | 2023-04-27 |
| Department for Business & TradeNew | Other | 4 | £64k | 0.0% | 2026-05-11 |
| NHS Arden and Greater East Midlands Commissioning Support Unit | Other | 2 | £62k | 0.0% | 2023-07-07 |
| EAST MIDLANDS STRATEGIC COMMERCIAL UNIT | Other | 1 | £62k | 0.0% | 2018-04-04 |
| NHS Property Services Limited | Other | 1 | £60k | 0.0% | 2023-01-18 |
| BIP SOLUTIONS LIMITEDNew | Other | 1 | £60k | 0.0% | 2026-03-15 |
| DfTc - Department for Transport | Other | 1 | £55k | 0.0% | 2020-12-18 |
| Cambridgeshire County Council | Other | 1 | £54k | 0.0% | 2023-12-01 |
| The Electoral CommissionNew | Other | 1 | £50k | 0.0% | 2025-06-10 |
| Doncaster MBC | Other | 1 | £50k | 0.0% | 2021-03-08 |
| NHS PROFESSIONALS LIMITED | Other | 1 | £50k | 0.0% | 2016-05-16 |
| Borough Council of Calderdale | Other | 1 | £48k | 0.0% | 2023-02-10 |
| Parliamentary and Health Service Ombudsman | Other | 2 | £48k | 0.0% | 2025-12-09 |
| Health Research Authority | Other | 1 | £45k | 0.0% | 2023-07-31 |
| The Police & Crime Commissioner for Cumbria | Other | 1 | £45k | 0.0% | 2022-01-13 |
| Leeds Teaching Hospitals NHS Trust | Other | 1 | £44k | 0.0% | 2023-03-31 |
| UNIVERSITY OF SOUTHAMPTON | Other | 1 | £42k | 0.0% | 2016-06-20 |
| Government Commercial AgencyNew | Other | 1 | £39k | 0.0% | 2026-04-24 |
| Northumbria PoliceNew | Other | 1 | £38k | 0.0% | 2024-07-19 |
| Civil Nuclear Police Authority (CNPA) / Civil Nuclear Constabulary (CNC)New | Other | 1 | £38k | 0.0% | 2024-10-21 |
| STAFFORDSHIRE AND LANCASHIRE COMMISSIONING SUPPORT UNIT | Other | 1 | £35k | 0.0% | 2022-03-14 |
| MCA - Maritime and Coastguard Agency | Other | 2 | £35k | 0.0% | 2024-12-04 |
| Nottingham University Hospital NHS Trust | Other | 1 | £33k | 0.0% | 2022-03-21 |
| ST HELENS & KNOWSLEY TEACHING HOSPITALS NHS TRUST | Other | 1 | £33k | 0.0% | 2022-02-04 |
| Shared Services Connected Limited | Other | 1 | £32k | 0.0% | 2023-12-07 |
| Office for StudentsNew | Other | 1 | £30k | 0.0% | 2025-10-10 |
| City of Doncaster CouncilNew | Other | 1 | £30k | 0.0% | 2024-08-20 |
| ST HELENS & KNOWSLEY TEACHING HOSPITALS NHS TRUST | Other | 1 | £30k | 0.0% | 2021-03-31 |
| Telford & Wrekin Council | Other | 1 | £30k | 0.0% | 2018-03-15 |
| M O D Corsham | Other | 1 | £30k | 0.0% | 2017-01-16 |
| The National ArchivesNew | Other | 1 | £29k | 0.0% | 2024-10-30 |
| TEES ESK & WEAR VALLEYS NHS FOUNDATION TRUST | Other | 1 | £28k | 0.0% | 2022-11-24 |
| TRINITY HOUSE | Other | 1 | £28k | 0.0% | 2019-03-26 |
| Border to Coast Pensions Partnership Limited | Other | 1 | £28k | 0.0% | 2023-08-14 |
| Care Quality CommissionNew | Other | 2 | £25k | 0.0% | 2025-11-20 |
| TEES ESK & WEAR VALLEYS NHS TRUST | Other | 1 | £25k | 0.0% | 2024-02-05 |
| Manchester City Council | Other | 2 | £25k | 0.0% | 2017-08-17 |
| NHSBSA | Other | 1 | £24k | 0.0% | 2024-02-08 |
| HS2 | Other | 1 | £22k | 0.0% | 2021-11-26 |
| London Ambulance Service NHS Trust | Other | 1 | £20k | 0.0% | 2023-03-14 |
| Medicines and Healthcare Products Regulatory Agency | Other | 1 | £19k | 0.0% | 2023-06-21 |
| North East Lincolnshire CouncilNew | Other | 1 | £18k | 0.0% | 2024-12-09 |
| INSTITUTE FOR APPRENTICESHIPSNew | Other | 1 | £16k | 0.0% | 2024-06-07 |
| Driver and Vehicle Licensing AgencyNew | Other | 1 | £15k | 0.0% | 2024-10-07 |
| Department of Health and Social Care (DHSC)New | Other | 1 | £14k | 0.0% | 2024-07-08 |
| Foreign Commonwealth and Development Office | Other | 1 | £12k | 0.0% | 2021-10-04 |
| Leicestershire County Council, trading as ESPONew | Other | 2 | £0k | 0.0% | 2025-12-04 |
| UNIVERSITY OF MANCHESTER | Other | 2 | £0k | 0.0% | 2023-04-01 |
| The National Lottery Community Fund | Other | 1 | £0k | 0.0% | 2019-03-25 |
| Devon & Cornwall Constabulary | Other | 1 | £0k | 0.0% | 2017-11-17 |
| Walsall Healthcare NHS Trust | Other | 1 | £0k | 0.0% | 2017-10-12 |
| Rotherham MBC | Other | 1 | £0k | 0.0% | 2016-08-31 |
| Dorset HealthCare University NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 2 | £0k | 0.0% | |
| Lincolnshire County Council | Other | 1 | £0k | 0.0% | |
| Board of Trustees of the Royal Botanic Gardens Kew | Other | 2 | £0k | 0.0% | |
| South Tyneside Borough Council | Other | 1 | £0k | 0.0% | |
| Cumberland Council | Other | 1 | £0k | 0.0% | |
| NPL Management Limited | Other | 2 | £0k | 0.0% | |
| Shropshire Council | Other | 1 | £0k | 0.0% | |
| Somerset Council | Other | 1 | £0k | 0.0% | |
| UNIVERSITY OF SHEFFIELD | Other | 6 | £0k | 0.0% | |
| YPO | Other | 1 | £0k | 0.0% | |
| Skills Development Scotland Co. Limited | Other | 5 | £0k | 0.0% | |
| Network Rail Infrastructure Ltd | Other | 1 | £0k | 0.0% | |
| City of Bradford Metropolitan District Council | Other | 1 | £0k | 0.0% | |
| Anchor Hanover Group | Other | 1 | £0k | 0.0% | |
| University Of The West Of England | Other | 3 | £0k | 0.0% | |
| British Transport Police | Other | 1 | £0k | 0.0% | |
| The Mayor and Commonalty and Citizens of the City of London | Other | 1 | £0k | 0.0% | |
| Department for Transport | Other | 1 | £0k | 0.0% | |
| UK Research and Innovation | Other | 3 | £0k | 0.0% | |
| University of Aberdeen | Other | 1 | £0k | 0.0% | |
| Supplier Development Programme | Other | 1 | £0k | 0.0% | |
| Yorkshire Purchasing Organisation | Other | 1 | £0k | 0.0% | |
| Corporate Officer of the House of Lords | Other | 1 | £0k | 0.0% | |
| United Lincolnshire Teaching Hospitals NHS Trust | Other | 1 | £0k | 0.0% | |
| Driver and Vehicle Standards Agency | Other | 1 | £0k | 0.0% | |
| The Common Services Agency (more commonly known as NHS National Services Scotland) (NSS) | Other | 1 | £0k | 0.0% | |
| APUC Limited | Other | 1 | £0k | 0.0% | |
| Coventry University | Other | 1 | £0k | 0.0% | |
| Kent Community Health NHS Foundation Trust | Other | 1 | £0k | 0.0% | |