| YORKSHIRE WATER SERVICES LIMITEDNew | Other | 3 | £48m | 85.3% | 2025-12-19 |
| University of PlymouthNew | Other | 1 | £2m | 3.1% | 2024-10-11 |
| Environment Agency | Other | 2 | £1m | 2.0% | 2025-09-11 |
| NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUST | Other | 3 | £823k | 1.5% | 2025-02-14 |
| University of Leicester | Other | 2 | £800k | 1.4% | 2022-01-07 |
| City of London Corporation | Other | 1 | £775k | 1.4% | 2022-11-02 |
| UK Research and InnovationNew | Other | 1 | £460k | 0.8% | 2025-07-08 |
| Exeter City Council | Other | 1 | £377k | 0.7% | 2021-06-14 |
| BANK OF ENGLAND | Other | 1 | £353k | 0.6% | 2020-05-20 |
| Newcastle University | Other | 5 | £293k | 0.5% | 2021-05-17 |
| University Of The West Of England | Other | 6 | £275k | 0.5% | 2017-08-16 |
| SOMERSET NHS FOUNDATION TRUSTNew | Other | 1 | £211k | 0.4% | 2024-12-16 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 5 | £171k | 0.3% | 2024-06-05 |
| University of Bath | Other | 1 | £140k | 0.2% | 2016-10-27 |
| Royal Northern College of Music | Other | 1 | £139k | 0.2% | 2021-02-04 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITED | Other | 3 | £136k | 0.2% | 2022-11-14 |
| Redcar and Cleveland Borough Council | Other | 2 | £107k | 0.2% | 2019-03-31 |
| THE UNIVERSITY OF CUMBRIANew | Other | 1 | £68k | 0.1% | 2024-08-01 |
| UNIVERSITY OF DERBY | Other | 2 | £52k | 0.1% | 2022-07-29 |
| University Hospitals Sussex NHS Foundation TrustNew | Other | 1 | £45k | 0.1% | 2025-03-19 |
| KINGSTON HOSPITAL NHS FOUNDATIONTRUST | Other | 1 | £42k | 0.1% | 2016-11-30 |
| United Lincolnshire Hospitals NHS Trust | Other | 1 | £40k | 0.1% | 2024-02-14 |
| TRINITY HOUSE | Other | 1 | £35k | 0.1% | 2022-08-22 |
| Public Health England | Other | 1 | £22k | 0.0% | 2016-10-19 |
| Hull University Teaching Hospitals NHS Trust | Other | 1 | £20k | 0.0% | 2022-07-22 |
| Leeds City Council | Other | 1 | £18k | 0.0% | 2016-03-22 |
| City Of Sunderland | Other | 1 | £18k | 0.0% | 2015-03-24 |
| UK Health Security Agency | Other | 1 | £9k | 0.0% | 2022-10-11 |
| University of SunderlandNew | Other | 2 | £0k | 0.0% | 2025-11-27 |
| Corporate Officer of the House of Commons | Other | 1 | £0k | 0.0% | |
| Hartlepool Borough Council | Other | 1 | £0k | 0.0% | |
| UNIVERSITY OF EXETER | Other | 3 | £0k | 0.0% | |
| THE ROYAL ORTHOPAEDIC HOSPITAL NHS FOUNDATION TRUST | Other | 2 | £0k | 0.0% | |
| University Of Edinburgh | Other | 2 | £0k | 0.0% | |
| THE PIRBRIGHT INSTITUTE | Other | 3 | £0k | 0.0% | |
| Scottish Hydro Electric Power Distribution Plc | Other | 1 | £0k | 0.0% | |
| Nottingham City Campus, Hucknall Road | Other | 2 | £0k | 0.0% | |
| NORTHERN GAS NETWORKS LIMITED | Other | 1 | £0k | 0.0% | |
| NHS Greater Glasgow and Clyde | Other | 13 | £0k | 0.0% | |
| Sellafield Limited | Other | 1 | £0k | 0.0% | |
| The Hillingdon Hospitals NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| Newcastle City Council | Other | 1 | £0k | 0.0% | |
| Staffordshire County Council | Other | 1 | £0k | 0.0% | |
| SSE plc | Other | 1 | £0k | 0.0% | |
| The Christie NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| ENVIRONMENT AGENCY (Defra Network eTendering Portal) | Other | 1 | £0k | 0.0% | |
| Northern Ireland Electricity Networks Limited | Other | 1 | £0k | 0.0% | |
| York Teaching Hospital Facilities Management Company | Other | 1 | £0k | 0.0% | |
| CITY HOSPITALS INDEPENDENT COMMERCIAL ENTERPRISES LIMITED | Other | 2 | £0k | 0.0% | |
| The Mayor and Commonalty and Citizens of the City of London | Other | 1 | £0k | 0.0% | |
| SOUTH TYNESIDE AND SUNDERLAND NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |