| NHS EnglandNew | Other | 2 | £3.7bn | 29.8% | 2026-03-04 |
| Scape Group Limited | Other | 3 | £3.0bn | 24.1% | 2021-09-08 |
| Department for Education | Other | 108 | £1.3bn | 10.7% | 2026-04-30 |
| Ministry of Justice | Other | 13 | £840m | 6.8% | 2025-10-13 |
| Leicester City Council | Other | 1 | £571m | 4.6% | 2021-07-22 |
| DIO Commercial | Other | 1 | £518m | 4.2% | 2023-04-18 |
| Ministry of Defence | Other | 10 | £497m | 4.0% | 2025-02-19 |
| LHC | Other | 1 | £289m | 2.3% | 2017-07-20 |
| Cornwall Council | Other | 4 | £216m | 1.7% | 2019-10-16 |
| East Riding of Yorkshire | Other | 1 | £188m | 1.5% | 2020-04-29 |
| Ministry of Defence, DIO, Defence Infrastructure Organisation (DIO) | Other | 1 | £140m | 1.1% | 2016-01-08 |
| Kent County Council | Other | 8 | £139m | 1.1% | 2024-10-09 |
| Yeovil District Hospital NHS Foundation Trust | Other | 1 | £89m | 0.7% | 2017-07-10 |
| Department for Work & Pensions | Other | 3 | £72m | 0.6% | 2023-07-21 |
| St Helens College | Other | 1 | £69m | 0.6% | 2018-06-20 |
| Hampshire County Council | Other | 9 | £54m | 0.4% | 2025-09-04 |
| Alder Hey Children's Hospital NHS Foundation Trust | Other | 1 | £48m | 0.4% | 2019-10-30 |
| Cambridgeshire County Council | Other | 1 | £38m | 0.3% | 2018-06-28 |
| Gloucestershire County Council | Other | 7 | £37m | 0.3% | 2025-03-13 |
| Northern Lincolnshire And Goole Nhs Foundation Trust Charitable Funds And Other Related Ch | Other | 1 | £37m | 0.3% | 2020-09-21 |
| Cheshire West and Chester Council | Other | 2 | £35m | 0.3% | 2023-04-17 |
| The Association of North East Councils Limited | Other | 2 | £33m | 0.3% | 2023-06-06 |
| WESTWORKS PROCUREMENT LIMITED | Other | 1 | £29m | 0.2% | 2024-04-25 |
| Warwick District Council | Other | 3 | £27m | 0.2% | 2022-09-06 |
| Braintree District Council | Other | 1 | £26m | 0.2% | 2019-10-25 |
| Leeds City Council - PACS | Other | 1 | £25m | 0.2% | 2022-04-08 |
| North Somerset Council | Other | 3 | £24m | 0.2% | 2022-03-28 |
| Plymouth City Council | Other | 3 | £22m | 0.2% | 2020-09-15 |
| Sheffield City Council | Other | 1 | £19m | 0.2% | 2022-07-08 |
| Sunderland City Council | Other | 4 | £18m | 0.1% | 2021-06-08 |
| East Riding of Yorkshire Council | Other | 1 | £17m | 0.1% | 2022-04-07 |
| Manchester Metropolitan University | Other | 1 | £17m | 0.1% | 2018-12-19 |
| West Sussex County Council | Other | 1 | £16m | 0.1% | 2022-09-22 |
| Kirklees Council | Other | 1 | £14m | 0.1% | 2020-01-16 |
| Ashfield District Council | Other | 2 | £14m | 0.1% | 2022-02-28 |
| Norfolk County Council | Other | 3 | £14m | 0.1% | 2024-03-27 |
| Shropshire Council | Other | 1 | £14m | 0.1% | 2019-09-09 |
| HS2 | Other | 1 | £13m | 0.1% | 2021-07-08 |
| Borough Council of Kings Lynn and West Norfolk | Other | 1 | £13m | 0.1% | 2019-06-28 |
| Defence Infrastructure Organisation | Other | 1 | £10m | 0.1% | 2022-08-19 |
| CHESHIRE EAST COUNCIL | Other | 2 | £10m | 0.1% | 2024-12-11 |
| South Yorkshire Police Headquarters | Other | 3 | £10m | 0.1% | 2024-09-16 |
| One Housing | Other | 1 | £10m | 0.1% | 2020-07-06 |
| Defence Science and Technology LaboratoryNew | Other | 4 | £9m | 0.1% | 2026-05-05 |
| Wolverhampton City Council | Other | 4 | £9m | 0.1% | 2018-08-07 |
| Cornwall Partnership NHS Foundation Trust | Other | 1 | £9m | 0.1% | 2023-03-10 |
| Home OfficeNew | Other | 2 | £8m | 0.1% | 2026-04-21 |
| Rotherham Metropolitan Borough Council | Other | 2 | £8m | 0.1% | 2024-09-06 |
| Hull City Council | Other | 1 | £7m | 0.1% | 2024-03-22 |
| Stockton Borough Council | Other | 1 | £7m | 0.1% | 2021-11-24 |
| Middlesbrough Council | Other | 1 | £7m | 0.1% | 2016-09-01 |
| South Hams District Council | Other | 2 | £6m | 0.1% | 2021-09-27 |
| National HighwaysNew | Other | 1 | £6m | 0.0% | 2024-07-24 |
| The Hall For Cornwall Trust | Other | 1 | £6m | 0.0% | 2018-02-13 |
| DEFRA | Other | 7 | £5m | 0.0% | 2025-04-07 |
| UNIVERSITY OF DERBY | Other | 1 | £5m | 0.0% | 2022-09-20 |
| University Of The West Of England | Other | 4 | £3m | 0.0% | 2018-05-09 |
| Further Competition from the Cambridgeshire County Council Design & Build Contractor Framework For Lot 1 (£1m - £2.99m) - St. Philip's Primary School | Other | 1 | £3m | 0.0% | 2019-07-22 |
| Sheffield Hallam University | Other | 3 | £3m | 0.0% | 2017-10-06 |
| London Borough of Hackney | Other | 2 | £2m | 0.0% | 2024-04-01 |
| Nottingham Trent University | Other | 2 | £2m | 0.0% | 2016-07-04 |
| London Borough of Richmond Upon ThamesNew | Other | 1 | £2m | 0.0% | 2024-06-24 |
| Buckinghamshire Council | Other | 1 | £2m | 0.0% | 2016-06-22 |
| DEPARTMENT FOR INTERNATIONAL DEVELOPMENT | Other | 1 | £1m | 0.0% | 2018-10-08 |
| Intellectual Property Office | Other | 1 | £1m | 0.0% | 2021-01-15 |
| Department for Environment Food & Rural AffairsNew | Other | 2 | £1m | 0.0% | 2024-11-04 |
| Environment AgencyNew | Other | 1 | £869k | 0.0% | 2025-01-06 |
| Torbay Council | Other | 1 | £800k | 0.0% | 2021-12-10 |
| Northumberland County Council | Other | 2 | £719k | 0.0% | 2025-05-14 |
| Your Homes Newcastle Ltd | Other | 1 | £575k | 0.0% | 2018-06-22 |
| Department of Health and Social Care (T&T) | Other | 1 | £533k | 0.0% | 2021-03-10 |
| Highways Agency | Other | 1 | £480k | 0.0% | 2016-01-15 |
| NHS Blood and Transplant (Filton, Bristol)New | Other | 2 | £472k | 0.0% | 2026-02-07 |
| Leeds City Council | Other | 1 | £427k | 0.0% | 2019-02-27 |
| DERBY CITY COUNCIL | Other | 1 | £415k | 0.0% | 2018-07-12 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £380k | 0.0% | 2019-01-24 |
| University of Plymouth | Other | 1 | £345k | 0.0% | 2018-09-20 |
| NHS Blood and Transplant (Bristol)New | Other | 1 | £339k | 0.0% | 2025-06-05 |
| Lancashire ConstabularyNew | Other | 1 | £324k | 0.0% | 2024-07-10 |
| Durham County CouncilNew | Other | 1 | £300k | 0.0% | 2024-08-29 |
| Liverpool City Council | Other | 2 | £264k | 0.0% | 2024-08-11 |
| South Ribble Borough CouncilNew | Other | 1 | £255k | 0.0% | 2025-07-07 |
| Magenta Living | Other | 1 | £186k | 0.0% | 2018-01-26 |
| Nottingham City Council | Other | 1 | £184k | 0.0% | 2022-01-21 |
| Bristol City Council | Other | 1 | £122k | 0.0% | 2022-01-14 |
| NHS Blood and Transplant (NHSBT) | Other | 2 | £107k | 0.0% | 2024-05-15 |
| Devon & Somerset Fire & Rescue Service | Other | 1 | £70k | 0.0% | 2019-07-24 |
| Wirral CouncilNew | Other | 3 | £0k | 0.0% | 2026-03-19 |
| BRISTOL TEMPLE QUARTER LLPNew | Other | 1 | £0k | 0.0% | 2026-02-11 |
| UNIVERSITY OF EAST ANGLIA | Other | 1 | £0k | 0.0% | 2023-04-13 |
| Pagabo | Other | 1 | £0k | 0.0% | 2020-03-20 |
| Newlon Housing Trust | Other | 1 | £0k | 0.0% | 2017-04-04 |
| Essex County Council | Other | 1 | £0k | 0.0% | 2016-03-01 |
| Bridgend County Borough Council | Other | 1 | £0k | 0.0% | |
| Islington | Other | 1 | £0k | 0.0% | |
| The Council of the Borough of Kirklees | Other | 1 | £0k | 0.0% | |
| The Common Services Agency (more commonly known as NHS National Services Scotland) (NSS) | Other | 2 | £0k | 0.0% | |
| Cyngor Gwynedd | Other | 2 | £0k | 0.0% | |
| Kingston Upon Hull City Council | Other | 3 | £0k | 0.0% | |
| Great Ormond Street Hospital for Children NHS Foundation Trust | Other | 3 | £0k | 0.0% | |
| Queen Victoria Hospital NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| River Clyde Homes | Other | 1 | £0k | 0.0% | |
| Red Kite Learning Trust | Other | 3 | £0k | 0.0% | |
| NHS Golden Jubilee | Other | 2 | £0k | 0.0% | |
| City & County of Swansea | Other | 1 | £0k | 0.0% | |
| Corporate Officer of the House of Commons | Other | 2 | £0k | 0.0% | |
| Moray Council | Other | 1 | £0k | 0.0% | |
| Stockport Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Hyde Housing Association Ltd | Other | 1 | £0k | 0.0% | |
| Cardiff Council | Other | 4 | £0k | 0.0% | |
| NEUPC Ltd | Other | 1 | £0k | 0.0% | |
| Manchester City Council | Other | 1 | £0k | 0.0% | |
| The Education Alliance | Other | 2 | £0k | 0.0% | |
| Central Bedfordshire Council | Other | 1 | £0k | 0.0% | |
| Medway Council | Other | 1 | £0k | 0.0% | |
| Renfrewshire Council | Other | 1 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 1 | £0k | 0.0% | |
| Somerset Council | Other | 1 | £0k | 0.0% | |