| Star Procurement | Other | 1 | £400k | 15.5% | 2016-02-02 |
| Staffordshire County CouncilNew | Other | 1 | £175k | 6.8% | 2026-02-26 |
| Stockton Borough Council | Other | 2 | £154k | 5.9% | 2025-02-19 |
| Northumbria Police | Other | 1 | £143k | 5.5% | 2024-01-03 |
| Cambridgeshire County Council | Other | 1 | £135k | 5.2% | 2022-09-30 |
| West Northamptonshire CouncilNew | Other | 2 | £128k | 5.0% | 2025-10-21 |
| Kent County CouncilNew | Other | 1 | £124k | 4.8% | 2024-05-30 |
| North Yorkshire County Council | Other | 1 | £122k | 4.7% | 2023-02-22 |
| Cambridge City Council | Other | 1 | £120k | 4.6% | 2021-05-14 |
| NATIONAL WEALTH FUND LIMITEDNew | Other | 1 | £116k | 4.5% | 2025-06-01 |
| NHS Arden and GEM CSU | Other | 1 | £86k | 3.3% | 2022-05-09 |
| Doncaster MBC | Other | 2 | £76k | 2.9% | 2020-01-10 |
| NHS Arden and Greater East Midlands Commissioning Support Unit | Other | 1 | £75k | 2.9% | 2021-06-21 |
| Suffolk County Council Workforce Development | Other | 1 | £71k | 2.8% | 2021-02-05 |
| Blackburn With Darwen Borough Council | Other | 1 | £67k | 2.6% | 2023-11-23 |
| COLLEGE OF POLICING LIMITEDNew | Other | 2 | £64k | 2.5% | 2026-03-13 |
| Milton Keynes Council | Other | 1 | £61k | 2.4% | 2023-01-24 |
| Cumbria County Council | Other | 2 | £48k | 1.9% | 2021-09-29 |
| National Audit Office | Other | 4 | £46k | 1.8% | 2021-04-15 |
| South Cambridgeshire District Council | Other | 1 | £42k | 1.6% | 2020-05-21 |
| Oldham Council | Other | 1 | £40k | 1.5% | 2020-03-19 |
| Darlington Borough CouncilNew | Other | 1 | £33k | 1.3% | 2024-12-29 |
| Ministry of Defence | Other | 1 | £33k | 1.3% | 2023-06-06 |
| Coventry City Council | Other | 1 | £31k | 1.2% | 2022-07-21 |
| Office for Students | Other | 1 | £29k | 1.1% | 2023-07-13 |
| Salford City Council | Other | 1 | £28k | 1.1% | 2020-03-19 |
| Welland Procurement Unit | Other | 1 | £27k | 1.0% | 2020-12-11 |
| Nottinghamshire County CouncilNew | Other | 1 | £25k | 1.0% | 2025-03-17 |
| National Museums Liverpool | Other | 1 | £24k | 0.9% | 2020-01-08 |
| London Borough of Croydon | Other | 1 | £18k | 0.7% | 2023-06-26 |
| Oxfordshire County Council | Other | 1 | £18k | 0.7% | 2023-09-04 |
| Sandwell Metropolitan Borough Council | Other | 1 | £15k | 0.6% | 2021-03-29 |
| Care Quality Commission | Other | 1 | £11k | 0.4% | 2020-01-30 |
| Leicestershire County Council, trading as ESPONew | Other | 2 | £0k | 0.0% | 2025-12-04 |
| Coventry - Solihull - Warwickshire | Other | 1 | £0k | 0.0% | 2017-08-15 |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITED | Other | 1 | £0k | 0.0% | |
| Espo | Other | 1 | £0k | 0.0% | |
| City of Doncaster Council | Other | 1 | £0k | 0.0% | |
| ORBIT GROUP LIMITED | Other | 1 | £0k | 0.0% | |
| East Of England NHS Collaborative Hub | Other | 3 | £0k | 0.0% | |
| The Police, Fire and Crime Commissioner for Northamptonshire | Other | 1 | £0k | 0.0% | |