| DIO Commercial | Other | 1 | £518m | 27.5% | 2023-04-18 |
| Ministry of Justice | Other | 18 | £300m | 15.9% | 2025-06-26 |
| Gloucestershire County Council | Other | 2 | £200m | 10.6% | 2023-06-15 |
| Home OfficeNew | Other | 4 | £172m | 9.1% | 2024-08-23 |
| National Highways | Other | 9 | £112m | 5.9% | 2025-03-03 |
| Ministry of Defence | Other | 7 | £69m | 3.7% | 2023-11-17 |
| St Helens College | Other | 1 | £69m | 3.7% | 2018-06-20 |
| North Somerset CouncilNew | Other | 1 | £67m | 3.5% | 2025-04-01 |
| Oldham Council | Other | 2 | £64m | 3.4% | 2022-01-06 |
| Borough Council of Calderdale | Other | 1 | £34m | 1.8% | 2023-09-29 |
| Defence Infrastructure Organisation | Other | 1 | £31m | 1.7% | 2024-03-26 |
| H M REVENUE & CUSTOMS | Other | 1 | £28m | 1.5% | 2022-01-10 |
| CLARION HOUSING PROPERTY DEVELOPMENT SERVICES LIMITEDNew | Other | 1 | £27m | 1.4% | 2025-10-29 |
| Leeds City Council - PACS | Other | 1 | £25m | 1.3% | 2022-04-08 |
| Leeds City Council | Other | 1 | £23m | 1.2% | 2022-08-25 |
| North Yorkshire County Council | Other | 4 | £21m | 1.1% | 2025-07-14 |
| Middlesbrough Council | Other | 1 | £18m | 1.0% | 2021-08-23 |
| Sheffield City Council | Other | 3 | £18m | 0.9% | 2022-09-26 |
| North Lincolnshire Council | Other | 4 | £17m | 0.9% | 2022-07-16 |
| East Riding of Yorkshire Council | Other | 2 | £17m | 0.9% | 2022-04-07 |
| North of England Commercial Procurement CollaborativeNew | Other | 1 | £11m | 0.6% | 2024-08-02 |
| Birmingham City CouncilNew | Other | 2 | £9m | 0.5% | 2025-02-06 |
| Stockport Metropolitan Borough Council | Other | 1 | £8m | 0.4% | 2020-11-03 |
| Wigan Council | Other | 1 | £8m | 0.4% | 2021-12-17 |
| National Highways Limited | Other | 5 | £6m | 0.3% | 2026-02-17 |
| Derbyshire County Council | Other | 1 | £5m | 0.3% | 2024-01-30 |
| Hampshire County Council | Other | 6 | £3m | 0.2% | 2023-07-14 |
| N H S Shared Business ServicesNew | Other | 1 | £2m | 0.1% | 2024-09-13 |
| DEFRA | Other | 3 | £1m | 0.1% | 2023-09-11 |
| Rotherham Metropolitan Borough Council | Other | 1 | £884k | 0.0% | 2023-08-31 |
| Espo | Other | 1 | £820k | 0.0% | 2023-02-14 |
| THE UNIVERSITY OF BIRMINGHAMNew | Other | 1 | £416k | 0.0% | 2024-08-05 |
| Stockton Borough Council | Other | 1 | £170k | 0.0% | 2023-03-14 |
| LIFECYCLE MANAGEMENT GROUP LIMITEDNew | Other | 1 | £149k | 0.0% | 2024-12-17 |
| Environment AgencyNew | Other | 1 | £90k | 0.0% | 2025-02-19 |
| SATELLITE APPLICATIONS CATAPULT | Other | 1 | £77k | 0.0% | 2021-12-20 |
| United Lincolnshire Teaching Hospitals NHS TrustNew | Other | 2 | £66k | 0.0% | 2025-02-27 |
| Plymouth City Council | Other | 1 | £52k | 0.0% | 2022-09-02 |
| Wirral CouncilNew | Other | 6 | £0k | 0.0% | 2026-03-19 |
| Leicestershire County Council, trading as ESPONew | Other | 2 | £0k | 0.0% | 2025-12-04 |
| ORE CatapultNew | Other | 2 | £0k | 0.0% | 2025-09-25 |
| Coventry - Solihull - Warwickshire | Other | 1 | £0k | 0.0% | 2018-03-06 |
| Stockton on Tees Borough Council | Other | 1 | £0k | 0.0% | |
| Scottish Government | Other | 4 | £0k | 0.0% | |
| London Borough of Haringey | Other | 2 | £0k | 0.0% | |
| NATIONAL GRID UK LIMITED | Other | 2 | £0k | 0.0% | |
| The Association of North East Councils Limited | Other | 1 | £0k | 0.0% | |
| WESSEX WATER SERVICES LIMITED | Other | 2 | £0k | 0.0% | |
| Leeds and York Partnership NHS Foundation Trust, trading as North of England NHS Commercial Procurement Collaborative ("NOE CPC") | Other | 1 | £0k | 0.0% | |
| Communities & Housing Investment Consortium Ltd (CHIC) | Other | 1 | £0k | 0.0% | |
| Cyngor Gwynedd | Other | 2 | £0k | 0.0% | |
| Southern Water Services Ltd. | Other | 2 | £0k | 0.0% | |
| YORKSHIRE WATER SERVICES LIMITED | Other | 1 | £0k | 0.0% | |
| ENVIRONMENT AGENCY (Defra Network eTendering Portal) | Other | 2 | £0k | 0.0% | |
| DWR CYMRU CYFYNGEDIG | Other | 2 | £0k | 0.0% | |
| Leicestershire County Council | Other | 1 | £0k | 0.0% | |
| LHC Procurement Group | Other | 12 | £0k | 0.0% | |
| Wessex Water Services Ltd | Other | 2 | £0k | 0.0% | |
| Hyde Housing Association Limited | Other | 7 | £0k | 0.0% | |
| Department for Education | Other | 6 | £0k | 0.0% | |
| KBS MARITIME LIMITED | Other | 1 | £0k | 0.0% | |
| Northern Lincolnshire and Goole NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| NORTHUMBRIAN WATER LIMITED | Other | 3 | £0k | 0.0% | |
| Cardiff Council | Other | 3 | £0k | 0.0% | |
| NHS SHARED BUSINESS SERVICES LIMITED | Other | 5 | £0k | 0.0% | |
| Sunderland City Council | Other | 3 | £0k | 0.0% | |