| Ministry of Defence | Other | 11 | £47m | 47.5% | 2022-07-26 |
| Ministry of Defence, Air Support, Air Commodities Project Team (AC PT) | Other | 2 | £37m | 37.1% | 2016-01-04 |
| West Midlands Fire and Rescue Authority | Other | 5 | £2m | 2.0% | 2021-06-22 |
| Nottinghamshire Fire and Rescue ServiceNew | Other | 1 | £2m | 1.6% | 2026-02-11 |
| Essex Police, Fire and Crime Commissioner Fire and Rescue Authority | Other | 2 | £1m | 1.5% | 2025-08-12 |
| YPO | Other | 3 | £1m | 1.3% | 2018-06-06 |
| BABCOCK INTERNATIONAL GROUP PLC | Other | 1 | £960k | 1.0% | 2017-10-22 |
| Ministry of Defence, DSG, Defence Support Group (DSG) | Other | 1 | £960k | 1.0% | 2017-10-16 |
| West Midlands Fire ServiceNew | Other | 2 | £802k | 0.8% | 2025-01-28 |
| Nuclear Restoration ServicesNew | Other | 4 | £681k | 0.7% | 2024-12-19 |
| Yorkshire Purchasing Organisation | Other | 1 | £638k | 0.6% | 2020-12-17 |
| Devon and Somerset Fire and Rescue Authority | Other | 3 | £561k | 0.6% | 2025-02-05 |
| Defence Equipment and Support | Other | 1 | £450k | 0.5% | |
| Suffolk County Council | Other | 1 | £404k | 0.4% | 2024-03-12 |
| Cleveland Fire AuthorityNew | Other | 1 | £326k | 0.3% | 2025-02-04 |
| Tyne and Wear Passenger Transport Executive T/A Nexus | Other | 2 | £320k | 0.3% | 2024-12-12 |
| OFFICE OF NORTHAMPTONSHIRE POLICE AND CRIME COMMISSIONER | Other | 1 | £297k | 0.3% | 2021-10-22 |
| West Yorkshire Fire and Rescue Authority | Other | 1 | £248k | 0.2% | 2023-07-04 |
| Sellafield Ltd | Other | 2 | £238k | 0.2% | 2023-01-27 |
| Buckinghamshire and Milton Keynes Fire Authority | Other | 2 | £232k | 0.2% | 2025-01-15 |
| Nuclear Restoration Services LimitedNew | Other | 2 | £228k | 0.2% | 2025-05-09 |
| UK RESEARCH & INNOVATIONNew | Other | 1 | £225k | 0.2% | 2025-02-10 |
| Dounreay Site Restoration Ltd | Other | 1 | £220k | 0.2% | 2022-10-27 |
| Staffordshire Police | Other | 1 | £200k | 0.2% | 2023-08-09 |
| Avon Fire Authority | Other | 2 | £190k | 0.2% | 2024-03-31 |
| Hereford & Worcester Fire and Rescue Service | Other | 1 | £142k | 0.1% | 2019-08-07 |
| Northumberland County CouncilNew | Other | 1 | £133k | 0.1% | 2025-05-06 |
| Merseyside Fire and Rescue AuthorityNew | Other | 1 | £70k | 0.1% | 2025-06-02 |
| BIP SOLUTIONS LIMITEDNew | Other | 1 | £64k | 0.1% | 2026-03-04 |
| Royal Berkshire Fire & Rescue ServiceNew | Other | 1 | £62k | 0.1% | 2025-01-30 |
| CTM Portal for the NDA Shared Services Alliance | Other | 1 | £51k | 0.1% | 2022-02-17 |
| EMSCU Nottinghamshire Police | Other | 1 | £45k | 0.0% | 2020-03-05 |
| Cheshire Constabulary on behalf of the Police and Crime Commissioner for CheshireNew | Other | 1 | £40k | 0.0% | 2025-04-24 |
| Humberside Fire and Rescue Service | Other | 1 | £34k | 0.0% | 2021-06-30 |
| Brighton and Hove City Council | Other | 1 | £28k | 0.0% | 2022-03-31 |
| Herefordshire and Worcestershire Health and Care NHS Trust | Other | 1 | £20k | 0.0% | 2024-02-01 |
| London Borough of Hackney | Other | 1 | £20k | 0.0% | 2021-03-01 |
| Tyne and Wear Fire and Rescue Authority | Other | 1 | £18k | 0.0% | 2020-09-11 |
| PD TEESPORT LIMITEDNew | Other | 1 | £0k | 0.0% | 2026-03-04 |
| The Police, Fire and Crime Commissioner for Northamptonshire | Other | 2 | £0k | 0.0% | |
| Dudley Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Nuclear Restoration Services Limited (Dounreay) | Other | 1 | £0k | 0.0% | |
| Oxfordshire County Council | Other | 1 | £0k | 0.0% | |
| Leeds City Council - PACS | Other | 1 | £0k | 0.0% | |
| Kent County Council (t/a KCS Procurement Services) | Other | 3 | £0k | 0.0% | |
| Dounreay Site Restoration Limited | Other | 1 | £0k | 0.0% | |
| Sellafield Limited | Other | 1 | £0k | 0.0% | |
| Staffordshire Fire and Rescue Service | Other | 1 | £0k | 0.0% | |
| UK Research & Innovation | Other | 1 | £0k | 0.0% | |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITED | Other | 3 | £0k | 0.0% | |