| NHS EnglandNew | Other | 3 | £3.7bn | 31.6% | 2026-03-04 |
| Scape Group Limited | Other | 3 | £3.0bn | 25.6% | 2021-09-08 |
| SCAPE INVESTMENTS LIMITED | Other | 1 | £1.8bn | 14.9% | 2017-04-01 |
| Department for Education | Other | 33 | £651m | 5.6% | 2026-03-13 |
| Devon County Council | Other | 4 | £321m | 2.7% | 2026-04-20 |
| LHC | Other | 1 | £289m | 2.5% | 2017-07-20 |
| East Riding of Yorkshire | Other | 1 | £188m | 1.6% | 2020-04-29 |
| Oldham Council | Other | 4 | £134m | 1.1% | 2023-09-18 |
| Yeovil District Hospital NHS Foundation Trust | Other | 1 | £89m | 0.8% | 2017-07-10 |
| Lincolnshire County Council | Other | 1 | £72m | 0.6% | 2024-04-30 |
| St Helens College | Other | 1 | £69m | 0.6% | 2018-06-20 |
| London Borough of Hounslow | Other | 2 | £67m | 0.6% | 2023-04-01 |
| Notting Hill Genesis | Other | 2 | £64m | 0.5% | 2022-06-07 |
| Ministry of Defence | Other | 3 | £61m | 0.5% | 2023-12-06 |
| Star Procurement | Other | 1 | £61m | 0.5% | 2021-09-24 |
| University of GreenwichNew | Other | 2 | £60m | 0.5% | 2024-12-11 |
| House of CommonsNew | Other | 1 | £59m | 0.5% | 2025-12-03 |
| West Sussex County Council | Other | 1 | £48m | 0.4% | 2023-01-23 |
| Alder Hey Children's Hospital NHS Foundation Trust | Other | 1 | £48m | 0.4% | 2019-10-30 |
| Ministry of JusticeNew | Other | 1 | £45m | 0.4% | 2025-08-04 |
| DEFRA | Other | 8 | £41m | 0.3% | 2026-01-16 |
| GOVERNMENT PROPERTY AGENCYNew | Other | 2 | £38m | 0.3% | 2025-05-19 |
| Winchester City Council | Other | 1 | £37m | 0.3% | 2019-03-14 |
| Tees Valley Combined Authority | Other | 1 | £36m | 0.3% | 2023-03-06 |
| South Yorkshire Police | Other | 3 | £36m | 0.3% | 2020-06-05 |
| NHS Property Services Limited | Other | 3 | £35m | 0.3% | 2025-11-07 |
| Metropolitan Police Service | Other | 8 | £34m | 0.3% | 2022-03-30 |
| capitalEsourcing | Other | 4 | £32m | 0.3% | 2023-07-25 |
| South Tees Development Corporation | Other | 1 | £30m | 0.3% | 2023-03-01 |
| SE Shared Services | Other | 2 | £28m | 0.2% | 2020-10-23 |
| Leeds City Council - PACS | Other | 1 | £25m | 0.2% | 2022-04-08 |
| Telford & Wrekin Council | Other | 1 | £25m | 0.2% | 2021-05-18 |
| Darlington Borough Council | Other | 7 | £25m | 0.2% | 2024-12-14 |
| Liverpool City Council | Other | 5 | £24m | 0.2% | 2020-01-03 |
| Wiltshire Council | Other | 1 | £23m | 0.2% | 2020-05-21 |
| RUGBY BOROUGH COUNCIL | Other | 3 | £22m | 0.2% | 2024-11-06 |
| Central Bedfordshire Council | Other | 5 | £22m | 0.2% | 2023-04-28 |
| Warwickshire County CouncilNew | Other | 1 | £20m | 0.2% | 2025-06-16 |
| Northumberland County Council | Other | 4 | £19m | 0.2% | 2025-04-02 |
| Gateshead Council | Other | 1 | £19m | 0.2% | 2020-07-26 |
| East Riding of Yorkshire Council | Other | 2 | £18m | 0.2% | 2023-04-17 |
| Welland Procurement Unit | Other | 1 | £16m | 0.1% | 2021-01-04 |
| North Yorkshire County CouncilNew | Other | 1 | £16m | 0.1% | 2025-06-27 |
| Halton Borough Council | Other | 1 | £15m | 0.1% | 2020-07-15 |
| National Highways LimitedNew | Other | 1 | £14m | 0.1% | 2025-12-22 |
| Leicester City Council | Other | 3 | £14m | 0.1% | 2023-11-28 |
| Leicestershire County CouncilNew | Other | 6 | £14m | 0.1% | 2026-02-01 |
| Durham University | Other | 1 | £13m | 0.1% | 2016-12-22 |
| Kirklees CouncilNew | Other | 1 | £13m | 0.1% | 2025-03-31 |
| Milton Keynes Council | Other | 5 | £13m | 0.1% | 2023-04-28 |
| North Somerset Council | Other | 2 | £13m | 0.1% | 2018-08-31 |
| Redcar and Cleveland Borough CouncilNew | Other | 1 | £12m | 0.1% | 2024-08-18 |
| Buckinghamshire Council | Other | 4 | £11m | 0.1% | 2024-11-26 |
| Leeds City Council | Other | 8 | £11m | 0.1% | 2024-02-07 |
| Durham County Council | Other | 3 | £11m | 0.1% | 2025-09-03 |
| Sheffield City CouncilNew | Other | 1 | £10m | 0.1% | 2025-08-29 |
| Harrogate Borough Council | Other | 1 | £10m | 0.1% | 2019-11-18 |
| Luton CouncilNew | Other | 1 | £10m | 0.1% | 2025-11-24 |
| Avon and Wiltshire Mental Health Partnership NHS trust | Other | 1 | £10m | 0.1% | 2023-12-05 |
| London Borough of Sutton | Other | 2 | £10m | 0.1% | 2024-06-24 |
| Stevenage Borough Council | Other | 2 | £8m | 0.1% | 2020-12-14 |
| Canterbury City Council | Other | 2 | £8m | 0.1% | 2017-05-05 |
| Department of Health & Social Care | Other | 5 | £7m | 0.1% | 2023-03-20 |
| Cheltenham Borough Council | Other | 1 | £7m | 0.1% | 2017-04-02 |
| Harborough District Council | Other | 3 | £7m | 0.1% | 2018-12-19 |
| Wigan Council | Other | 1 | £7m | 0.1% | 2021-06-11 |
| Dorset County Hospital NHS Foundation Trust | Other | 1 | £7m | 0.1% | 2021-07-13 |
| West Midlands Fire Service | Other | 1 | £7m | 0.1% | 2016-05-23 |
| London Borough of Enfield | Other | 1 | £6m | 0.1% | 2022-01-09 |
| Kingston University | Other | 1 | £6m | 0.1% | 2022-09-21 |
| Chorley Council | Other | 1 | £6m | 0.1% | 2018-05-21 |
| University of Lincoln | Other | 2 | £6m | 0.1% | 2020-01-24 |
| Chesterfield Borough Council | Other | 1 | £6m | 0.0% | 2023-11-07 |
| WAKEFIELD COUNCIL | Other | 1 | £5m | 0.0% | 2016-06-09 |
| City of Doncaster Council | Other | 6 | £3m | 0.0% | 2024-05-02 |
| Torbay Council | Other | 2 | £2m | 0.0% | 2023-12-31 |
| Lancashire Constabulary | Other | 1 | £2m | 0.0% | 2023-09-14 |
| Peterborough City Council | Other | 1 | £2m | 0.0% | 2024-04-30 |
| Oxfordshire County CouncilNew | Other | 1 | £2m | 0.0% | 2024-08-27 |
| East Suffolk CouncilNew | Other | 1 | £1m | 0.0% | 2026-03-19 |
| Hampshire County Council | Other | 5 | £1m | 0.0% | 2023-03-14 |
| Bridgend County Borough CouncilNew | Other | 2 | £1m | 0.0% | 2026-05-07 |
| City of London Corporation | Other | 1 | £1m | 0.0% | 2023-02-28 |
| Radian Group Limited | Other | 1 | £1m | 0.0% | 2016-03-07 |
| West Yorkshire Combined Authority | Other | 2 | £982k | 0.0% | 2024-03-11 |
| Nottingham City CouncilNew | Other | 1 | £964k | 0.0% | 2024-07-01 |
| Department of Health and Social Care (DHSC) | Other | 3 | £881k | 0.0% | 2021-08-20 |
| London Borough Of Islington | Other | 1 | £868k | 0.0% | 2024-01-11 |
| Cheshire Constabulary on behalf of the Police and Crime Commissioner for CheshireNew | Other | 1 | £657k | 0.0% | 2024-06-27 |
| Senior Commercial ManagerNew | Other | 1 | £585k | 0.0% | 2025-07-10 |
| University Of The West Of England | Other | 2 | £539k | 0.0% | 2015-08-17 |
| Forestry Commission | Other | 1 | £415k | 0.0% | 2022-01-26 |
| Barnsley Metropolitan Borough Council | Other | 3 | £394k | 0.0% | 2023-03-30 |
| Bath Spa University | Other | 1 | £300k | 0.0% | 2022-06-27 |
| DIO Commercial | Other | 1 | £248k | 0.0% | 2021-02-25 |
| Doncaster MBC | Other | 1 | £180k | 0.0% | 2019-06-30 |
| Police, Fire & Crime Commissioner for StaffordshireNew | Other | 1 | £172k | 0.0% | 2025-10-16 |
| Thames Valley Police | Other | 1 | £136k | 0.0% | 2022-07-05 |
| National HighwaysNew | Other | 1 | £80k | 0.0% | 2025-07-22 |
| East Sussex Healthcare NHS Trust | Other | 1 | £47k | 0.0% | 2023-11-17 |
| UNIVERSITY OF GLOUCESTERSHIRE | Other | 1 | £32k | 0.0% | 2016-09-19 |
| Wirral CouncilNew | Other | 3 | £0k | 0.0% | 2026-03-19 |
| Surrey County Council | Other | 2 | £0k | 0.0% | 2023-05-09 |
| Solihull MBC (SOL) | Other | 1 | £0k | 0.0% | 2020-10-22 |
| Pagabo | Other | 1 | £0k | 0.0% | 2020-03-20 |
| WM Housing Group | Other | 1 | £0k | 0.0% | 2018-01-01 |
| Great Yarmouth Borough Council | Other | 1 | £0k | 0.0% | |
| The Council of the Borough of Kirklees | Other | 1 | £0k | 0.0% | |
| Westminster City Council | Other | 3 | £0k | 0.0% | |
| Coleg Gwent | Other | 1 | £0k | 0.0% | |
| Great Ormond Street Hospital for Children NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE | Other | 3 | £0k | 0.0% | |
| Queen Victoria Hospital NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Medway Council | Other | 1 | £0k | 0.0% | |
| University of Staffordshire | Other | 1 | £0k | 0.0% | |
| Islington | Other | 1 | £0k | 0.0% | |
| Carmarthenshire County Council | Other | 2 | £0k | 0.0% | |
| Cardiff Council | Other | 4 | £0k | 0.0% | |
| Places for People Group Limited | Other | 1 | £0k | 0.0% | |
| DONCASTER AND BASSETLAW TEACHING HOSPITALS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| Cardiff and Vale University Health Board | Other | 1 | £0k | 0.0% | |
| Department for Environment Food & Rural Affairs | Other | 1 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 1 | £0k | 0.0% | |
| Gateshead Borough Council | Other | 1 | £0k | 0.0% | |
| Kingston Upon Hull City Council | Other | 2 | £0k | 0.0% | |