| Cabinet Office | Other | 6 | £28m | 38.3% | 2024-05-13 |
| Crown Commercial Service | Other | 4 | £13m | 17.8% | 2023-07-14 |
| Department for Work & Pensions | Other | 8 | £9m | 12.7% | 2026-04-01 |
| H M REVENUE & CUSTOMSNew | Other | 1 | £5m | 7.0% | 2025-10-02 |
| Ministry of Defence | Other | 3 | £3m | 4.3% | 2025-10-16 |
| Department for Education | Other | 6 | £3m | 4.2% | 2021-07-28 |
| Home OfficeNew | Other | 1 | £2m | 3.2% | 2025-06-02 |
| NHS Shared Business Services Ltd (NHS SBS) | Other | 1 | £2m | 2.5% | 2021-06-23 |
| Greater Manchester Combined Authority - GMP | Other | 1 | £1m | 1.5% | 2023-06-23 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 3 | £766k | 1.1% | 2025-08-05 |
| Department for Culture, Media and Sport | Other | 2 | £746k | 1.0% | 2024-10-18 |
| BBC (British Broadcasting Corporation) | Other | 4 | £607k | 0.8% | 2018-10-19 |
| Department for International Trade | Other | 1 | £540k | 0.8% | 2023-11-15 |
| Shropshire Council | Other | 2 | £500k | 0.7% | 2019-04-15 |
| DEFRA | Other | 9 | £496k | 0.7% | 2026-02-17 |
| Suffolk County Council | Other | 3 | £470k | 0.7% | 2023-01-16 |
| General Medical Council (GMC) | Other | 1 | £400k | 0.6% | 2017-11-01 |
| South Gloucestershire Council | Other | 1 | £250k | 0.3% | 2018-04-03 |
| Care Quality CommissionNew | Other | 2 | £200k | 0.3% | 2025-08-27 |
| Nottinghamshire County Council | Other | 1 | £167k | 0.2% | 2017-03-01 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 1 | £126k | 0.2% | 2023-02-01 |
| Southampton City Council | Other | 2 | £126k | 0.2% | 2022-07-26 |
| Ministry of Justice | Other | 1 | £120k | 0.2% | 2021-05-06 |
| UNIVERSITY OF DERBY | Other | 1 | £105k | 0.1% | 2022-04-28 |
| Suffolk Sourcing | Other | 1 | £105k | 0.1% | 2020-10-19 |
| North Northamptonshire Council | Other | 1 | £60k | 0.1% | 2023-03-12 |
| Oldham Council | Other | 1 | £60k | 0.1% | 2023-01-24 |
| ICS on behalf of DSIT and DESNZNew | Other | 1 | £53k | 0.1% | 2025-08-19 |
| North Lincolnshire Council | Other | 1 | £42k | 0.1% | 2019-02-18 |
| Department for Environment Food & Rural AffairsNew | Other | 1 | £35k | 0.0% | 2026-04-30 |
| Driving Standards Agency | Other | 1 | £24k | 0.0% | 2020-07-03 |
| Office for StudentsNew | Other | 1 | £18k | 0.0% | 2025-05-22 |
| HS2 | Other | 1 | £16k | 0.0% | 2019-10-11 |
| NHS Business Services AuthorityNew | Other | 1 | £13k | 0.0% | 2026-01-09 |
| North East Lincolnshire Council | Other | 2 | £13k | 0.0% | 2022-05-09 |
| National Institute for Health and Care Excellence | Other | 1 | £0k | 0.0% | 2017-08-24 |
| Hampshire County Council | Other | 5 | £0k | 0.0% | 2018-08-22 |
| Telford and Wrekin CouncilNew | Other | 2 | £0k | 0.0% | 2025-11-19 |
| NHS Arden and Greater East Midlands Commissioning Support Unit | Other | 1 | £0k | 0.0% | 2016-09-23 |
| Hertfordshire County Council | Other | 3 | £0k | 0.0% | |
| Skills Development Scotland Co. Limited | Other | 1 | £0k | 0.0% | |
| YPO | Other | 1 | £0k | 0.0% | |
| Somerset Council | Other | 1 | £0k | 0.0% | |
| Leeds City Council - PACS | Other | 1 | £0k | 0.0% | |
| Multi-Provider Framework Agreement for the Provision of Apprenticeship Training in Norfolk | Other | 4 | £0k | 0.0% | |
| Yorkshire Purchasing Organisation | Other | 1 | £0k | 0.0% | |
| West Midlands Combined Authority | Other | 2 | £0k | 0.0% | |
| Manchester City Council | Other | 1 | £0k | 0.0% | |
| Leeds City Council | Other | 1 | £0k | 0.0% | |
| Department for Education acting through the Education and Skills Funding Agency | Other | 1 | £0k | 0.0% | |