| Sanctuary Housing Association | Other | 2 | £14m | 41.2% | 2021-04-22 |
| Government Commercial AgencyNew | Other | 1 | £2m | 6.1% | 2026-04-14 |
| Liverpool City Council | Other | 4 | £2m | 6.0% | 2023-02-10 |
| Northumbria Healthcare NHS Foundation TrustNew | Other | 1 | £2m | 5.9% | 2026-03-26 |
| Durham County Council | Other | 3 | £1m | 3.1% | 2025-05-15 |
| MCA - Maritime and Coastguard AgencyNew | Other | 1 | £995k | 2.9% | 2025-02-24 |
| DERBY CITY COUNCIL | Other | 1 | £877k | 2.6% | 2018-03-16 |
| City University | Other | 1 | £847k | 2.5% | 2016-08-15 |
| Alliance HomesNew | Other | 1 | £674k | 2.0% | 2025-07-17 |
| South Tees Hospitals NHS Foundation Trust | Other | 2 | £616k | 1.8% | 2024-02-29 |
| CHESHIRE EAST COUNCIL | Other | 2 | £485k | 1.4% | 2019-07-23 |
| Ministry of JusticeNew | Other | 1 | £475k | 1.4% | 2024-06-24 |
| Bath and North East Somerset Council | Other | 7 | £450k | 1.3% | 2023-10-23 |
| Redditch Borough CouncilNew | Other | 1 | £439k | 1.3% | 2025-11-28 |
| GATESHEAD HEALTH N H S FOUNDATION TRUSTNew | Other | 1 | £407k | 1.2% | 2025-10-23 |
| The Insolvency Service | Other | 1 | £400k | 1.2% | 2017-05-19 |
| The Charity Commission For England And WalesNew | Other | 1 | £360k | 1.1% | 2026-02-23 |
| ST HELENS & KNOWSLEY TEACHING HOSPITALS NHS TRUST | Other | 1 | £349k | 1.0% | 2021-03-19 |
| Devon & Somerset Fire & Rescue Service | Other | 1 | £320k | 0.9% | 2017-01-13 |
| The Police and Crime Commissioner for Kent | Other | 1 | £294k | 0.9% | 2018-10-31 |
| Shepway District Council | Other | 1 | £280k | 0.8% | 2016-05-04 |
| Supply Hertfordshire | Other | 1 | £261k | 0.8% | 2020-02-13 |
| Your Housing Group Ltd | Other | 1 | £254k | 0.7% | 2018-09-20 |
| ONWARD GROUP LIMITED | Other | 2 | £251k | 0.7% | 2020-06-19 |
| Isle of Wight Council | Other | 4 | £237k | 0.7% | 2023-06-30 |
| Shropshire Healthcare Procurement Service | Other | 1 | £204k | 0.6% | 2022-01-10 |
| Bromsgrove District CouncilNew | Other | 3 | £194k | 0.6% | 2025-07-01 |
| Newcastle University | Other | 4 | £184k | 0.5% | 2021-01-27 |
| RURAL PAYMENTS AGENCY | Other | 1 | £178k | 0.5% | 2016-12-21 |
| West Yorkshire Fire and Rescue Authority | Other | 2 | £171k | 0.5% | |
| South of England Procurement CentreNew | Other | 1 | £170k | 0.5% | 2024-10-25 |
| Department for Environment Food & Rural Affairs | Other | 2 | £158k | 0.5% | 2024-03-31 |
| Milton Keynes Council | Other | 1 | £151k | 0.4% | 2018-11-12 |
| Dorset County Hospital NHS Foundation Trust | Other | 1 | £149k | 0.4% | 2021-11-19 |
| Bishop Grosseteste University | Other | 1 | £146k | 0.4% | 2022-01-13 |
| Dorset HealthCare University NHS Foundation Trust | Other | 1 | £142k | 0.4% | 2018-07-24 |
| London Borough of Enfield | Other | 2 | £135k | 0.4% | 2023-03-31 |
| General Medical Council (GMC) | Other | 1 | £125k | 0.4% | 2017-12-13 |
| Sheffield Teaching Hospitals NHS Foundation Trust | Other | 1 | £120k | 0.4% | 2022-12-07 |
| Leicestershire County Council | Other | 1 | £114k | 0.3% | 2019-09-25 |
| Sussex Community NHS Foundation TrustNew | Other | 2 | £111k | 0.3% | 2026-05-20 |
| CALDERDALE AND HUDDERSFIELD SOLUTIONS LTDNew | Other | 1 | £96k | 0.3% | 2025-01-06 |
| WAKEFIELD COUNCIL | Other | 1 | £95k | 0.3% | 2021-04-01 |
| DEFRA | Other | 1 | £89k | 0.3% | 2021-03-30 |
| Birmingham City Council | Other | 1 | £81k | 0.2% | 2021-02-15 |
| Lancashire Constabulary | Other | 1 | £81k | 0.2% | 2020-10-21 |
| Stevenage Borough Council | Other | 1 | £77k | 0.2% | 2022-06-13 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 1 | £77k | 0.2% | 2021-04-29 |
| The Queen Elizabeth Hospital King's Lynn NHS Foundation Trust | Other | 2 | £59k | 0.2% | 2021-09-30 |
| UNIVERSITY OF SUSSEX(THE) | Other | 1 | £55k | 0.2% | 2023-07-07 |
| 7 Forces Procurement | Other | 1 | £51k | 0.1% | 2021-12-22 |
| Redditch Borough & Bromsgrove District Councils | Other | 1 | £50k | 0.1% | 2018-07-20 |
| NORTH TYNESIDE COUNCIL | Other | 2 | £49k | 0.1% | 2017-03-22 |
| Barnsley Metropolitan Borough Council | Other | 2 | £41k | 0.1% | 2019-09-26 |
| Devon and Somerset Fire and Rescue Authority | Other | 1 | £39k | 0.1% | 2023-03-20 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 2 | £33k | 0.1% | 2022-12-01 |
| South Derbyshire District Council | Other | 1 | £33k | 0.1% | 2022-01-20 |
| London Borough Of Islington | Other | 1 | £25k | 0.1% | 2024-04-30 |
| PROACTIS TENDERS LIMITED | Other | 1 | £15k | 0.0% | 2021-10-27 |
| UNIVERSITY OF EAST ANGLIANew | Other | 1 | £0k | 0.0% | 2024-09-12 |
| THE UNIVERSITY OF CUMBRIA | Other | 1 | £0k | 0.0% | 2018-08-02 |
| Hereford & Worcester Fire & Rescue Service | Other | 1 | £0k | 0.0% | 2017-10-12 |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 1 | £0k | 0.0% | |
| Portsmouth Hospitals University NHS Trust | Other | 1 | £0k | 0.0% | |
| Cornwall Council | Other | 1 | £0k | 0.0% | |
| NSAH (Alliance Homes) Ltd | Other | 1 | £0k | 0.0% | |
| Hull City Council | Other | 1 | £0k | 0.0% | |
| Hywel Dda University Local Health Board | Other | 1 | £0k | 0.0% | |
| INCOMMUNITIES LIMITED | Other | 1 | £0k | 0.0% | |
| West Midlands Fire and Rescue Authority | Other | 1 | £0k | 0.0% | |
| Derbyshire County Council | Other | 1 | £0k | 0.0% | |
| Northumbria Healthcare Facilities Management | Other | 1 | £0k | 0.0% | |