| East of England Collaborative Procurement Hub | Other | 1 | £500k | 21.9% | 2023-04-01 |
| East of England NHS collaborative Procurement Hub | Other | 2 | £417k | 18.3% | 2024-04-01 |
| Home OfficeNew | Other | 1 | £206k | 9.0% | 2024-12-20 |
| Bradford Metropolitan District Council | Other | 1 | £136k | 6.0% | 2017-09-25 |
| NHS Business Services Authority (North East)New | Other | 1 | £98k | 4.3% | 2025-03-18 |
| British Transport Police | Other | 4 | £91k | 4.0% | 2025-09-04 |
| NHS BSANew | Other | 1 | £81k | 3.5% | 2024-12-12 |
| NHS Arden and Greater East Midlands Commissioning Support Unit | Other | 3 | £72k | 3.2% | 2023-10-06 |
| NHS Business Services AuthorityNew | Other | 1 | £55k | 2.4% | 2025-03-24 |
| Shared Services Connected Limited | Other | 3 | £52k | 2.3% | 2023-10-12 |
| Hull City Council | Other | 17 | £48k | 2.1% | 2023-07-07 |
| Dorset county Council | Other | 1 | £43k | 1.9% | 2018-09-06 |
| NHS ResolutionNew | Other | 1 | £43k | 1.9% | 2025-07-11 |
| Cumberland CouncilNew | Other | 3 | £41k | 1.8% | 2025-03-28 |
| Staffordshire County Council | Other | 1 | £37k | 1.6% | 2024-01-06 |
| The Water Services Regulation Authority | Other | 1 | £36k | 1.6% | 2018-02-22 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 1 | £35k | 1.5% | 2023-06-02 |
| Border to Coast Pensions Partnership Limited | Other | 1 | £33k | 1.4% | 2023-02-20 |
| DfTc - Department for TransportNew | Other | 1 | £30k | 1.3% | 2025-05-06 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 2 | £29k | 1.3% | 2024-02-22 |
| English Heritage Trust | Other | 1 | £28k | 1.2% | 2023-12-20 |
| NHS Arden and GEM CSU | Other | 2 | £25k | 1.1% | 2022-05-18 |
| Manchester City Council | Other | 1 | £25k | 1.1% | 2019-05-13 |
| UK RESEARCH & INNOVATIONNew | Other | 1 | £20k | 0.9% | 2025-03-26 |
| Department for EducationNew | Other | 2 | £20k | 0.9% | 2025-02-06 |
| University of Bath | Other | 1 | £15k | 0.6% | 2021-04-01 |
| London Ambulance Service NHS Trust | Other | 2 | £15k | 0.6% | 2023-01-15 |
| Science Museum Group | Other | 2 | £14k | 0.6% | 2022-04-21 |
| DEFRA | Other | 1 | £14k | 0.6% | 2020-03-06 |
| Sandwell Metropolitan Borough Council | Other | 1 | £13k | 0.6% | 2021-04-01 |
| Sheffield City Council | Other | 1 | £5k | 0.2% | 2023-01-31 |
| North Yorkshire County Council | Other | 1 | £4k | 0.2% | 2017-08-02 |
| SE Shared Services | Other | 1 | £0k | 0.0% | 2019-03-19 |
| General Medical Council (GMC) | Other | 2 | £0k | 0.0% | |
| The Police, Fire and Crime Commissioner for Northamptonshire | Other | 1 | £0k | 0.0% | |
| South Yorkshire Mayoral Combined Authority | Other | 1 | £0k | 0.0% | |
| Caerphilly County Borough Council | Other | 1 | £0k | 0.0% | |
| East Of England NHS Collaborative Hub | Other | 1 | £0k | 0.0% | |
| The College Merthyr Tydfil | Other | 1 | £0k | 0.0% | |
| UNIVERSITY OF SHEFFIELD | Other | 2 | £0k | 0.0% | |
| Lincolnshire County Council | Other | 1 | £0k | 0.0% | |
| East and North Hertfordshire Teaching NHS Trust | Other | 1 | £0k | 0.0% | |
| UK Research and Innovation | Other | 4 | £0k | 0.0% | |
| The Police and Crime Commissioner for Northumbria | Other | 1 | £0k | 0.0% | |
| SALIX FINANCE LTD | Other | 1 | £0k | 0.0% | |