| Public Health England | Other | 13 | £48m | 28.9% | 2021-04-26 |
| Northern Ireland Water LimitedNew | Other | 8 | £43m | 26.4% | 2026-05-14 |
| Department of Health and Social Care (DHSC) | Other | 2 | £14m | 8.7% | 2026-05-14 |
| Sellafield | Other | 1 | £9m | 5.2% | 2016-08-16 |
| Department of Health and Social Care (T&T) | Other | 13 | £7m | 4.3% | 2021-08-19 |
| London Universities Purchasing Consortium | Other | 11 | £7m | 4.1% | 2021-06-15 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 11 | £6m | 3.5% | 2024-06-06 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 9 | £5m | 3.2% | 2024-07-25 |
| NEUPC Ltd | Other | 2 | £5m | 3.1% | 2020-03-09 |
| NHS England | Other | 2 | £4m | 2.4% | 2020-12-17 |
| CENTRE FOR PROCESS INNOVATION LIMITED | Other | 15 | £4m | 2.4% | 2022-04-12 |
| DEFRA | Other | 15 | £2m | 1.4% | 2023-11-02 |
| UNIVERSITY OF SOUTHAMPTON | Other | 4 | £2m | 1.2% | 2025-05-07 |
| Department of Health & Social Care | Other | 2 | £2m | 1.0% | 2020-11-30 |
| UK Health Security Agency | Other | 7 | £804k | 0.5% | 2025-11-05 |
| NHSBT - Clinical ServicesNew | Other | 1 | £720k | 0.4% | 2024-12-20 |
| NHS Blood and Transplant (NHSBT) | Other | 1 | £697k | 0.4% | 2021-10-07 |
| Newcastle University | Other | 9 | £673k | 0.4% | 2022-12-06 |
| HM Revenue & Customs | Other | 4 | £470k | 0.3% | 2025-09-17 |
| YPO | Other | 1 | £429k | 0.3% | 2017-07-19 |
| Secretary of State for Health and Social Care acting as part of the Crown through UK Health Security AgencyNew | Other | 3 | £389k | 0.2% | 2026-04-24 |
| YORKSHIRE WATER SERVICES LIMITEDNew | Other | 1 | £370k | 0.2% | 2026-03-10 |
| Southampton Solent University | Other | 1 | £200k | 0.1% | 2018-07-31 |
| Department for Environment Food & Rural Affairs | Other | 3 | £181k | 0.1% | 2024-06-28 |
| Teesside University | Other | 3 | £171k | 0.1% | 2019-03-27 |
| UK RESEARCH & INNOVATION | Other | 2 | £142k | 0.1% | 2022-01-18 |
| London School of Hygiene & Tropical Medicine | Other | 1 | £140k | 0.1% | 2019-01-21 |
| Espo | Other | 4 | £120k | 0.1% | 2018-01-16 |
| Birmingham City University | Other | 1 | £117k | 0.1% | 2017-05-28 |
| Defence Science and Technology Laboratory | Other | 8 | £114k | 0.1% | 2025-04-10 |
| Leeds Teaching Hospitals NHS TrustNew | Other | 1 | £101k | 0.1% | 2025-10-16 |
| The Christie NHS Foundation Trust | Other | 1 | £90k | 0.1% | 2019-06-20 |
| University Of The West Of England | Other | 6 | £81k | 0.0% | 2024-12-11 |
| Royal Botanic Gardens | Other | 4 | £79k | 0.0% | 2018-02-05 |
| Medicines and Healthcare Products Regulatory Agency | Other | 1 | £78k | 0.0% | 2019-02-12 |
| University of Chester | Other | 2 | £68k | 0.0% | 2018-01-08 |
| UNIVERSITY OF NOTTINGHAM (THE) | Other | 1 | £55k | 0.0% | 2018-03-22 |
| Northumbria University | Other | 1 | £50k | 0.0% | 2021-02-05 |
| Ministry of Defence | Other | 2 | £49k | 0.0% | 2023-06-23 |
| UNIVERSITY OF EAST ANGLIA | Other | 1 | £41k | 0.0% | 2024-04-27 |
| Forestry Commission | Other | 1 | £35k | 0.0% | 2020-12-03 |
| ANIMAL AND PLANT HEALTH AGENCYNew | Other | 1 | £35k | 0.0% | 2025-08-22 |
| UNIVERSITY OF SUSSEX(THE) | Other | 1 | £34k | 0.0% | 2023-07-21 |
| University of Lincoln | Other | 1 | £34k | 0.0% | 2021-12-17 |
| University of Bristol | Other | 2 | £30k | 0.0% | 2021-03-26 |
| University of PlymouthNew | Other | 1 | £27k | 0.0% | 2025-01-29 |
| Nuclear Restoration Services Limited (Dounreay) | Other | 1 | £25k | 0.0% | 2024-04-12 |
| University of Bedfordshire | Other | 1 | £20k | 0.0% | 2019-06-24 |
| The University of Nottingham | Other | 1 | £19k | 0.0% | 2017-07-24 |
| Health & Safety Executive | Other | 1 | £14k | 0.0% | 2023-05-29 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITED | Other | 1 | £13k | 0.0% | 2021-12-01 |
| UNIVERSITY OF SHEFFIELD | Other | 1 | £9k | 0.0% | 2023-09-05 |
| Medicines & Healthcare Products Regulatory Agency | Other | 1 | £8k | 0.0% | 2019-12-11 |
| HE Portal | Other | 1 | £0k | 0.0% | 2019-03-14 |
| UNIVERSITY OF MANCHESTER | Other | 1 | £0k | 0.0% | 2018-04-05 |
| MEDICINES DISCOVERY CATAPULT SERVICES LIMITED | Other | 1 | £0k | 0.0% | 2017-12-11 |
| Sellafield Ltd on Behalf of 5 NDA Sites | Other | 1 | £0k | 0.0% | |
| East Of England NHS Collaborative Hub | Other | 1 | £0k | 0.0% | |
| UNIVERSITY OF EXETER | Other | 1 | £0k | 0.0% | |
| Southern Universities Purchasing Consortium (SUPC) | Other | 7 | £0k | 0.0% | |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 21 | £0k | 0.0% | |
| University of Newcastle upon Tyne t/a Newcastle University | Other | 1 | £0k | 0.0% | |
| University of Glasgow | Other | 2 | £0k | 0.0% | |
| CAMBRIDGE UNIVERSITY HOSPITALS NHS FOUNDATION TRUST | Other | 3 | £0k | 0.0% | |
| Prifysgol Bangor / Bangor University | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 1 | £0k | 0.0% | |
| NHS Supply Chain | Other | 1 | £0k | 0.0% | |
| Queen's University Belfast | Other | 6 | £0k | 0.0% | |
| APUC Limited | Other | 21 | £0k | 0.0% | |
| Aberystwyth University | Other | 2 | £0k | 0.0% | |
| Agri-Food and Biosciences Institute (AFBI) | Other | 1 | £0k | 0.0% | |
| ASTON UNIVERSITY | Other | 1 | £0k | 0.0% | |
| NORTHUMBRIAN WATER GROUP LIMITED | Other | 1 | £0k | 0.0% | |
| The Common Services Agency (more commonly known as NHS National Services Scotland) (NSS) | Other | 1 | £0k | 0.0% | |
| East Of England NHS Collaborative Procurement Hub c/o West Suffolk NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| University Of Edinburgh | Other | 3 | £0k | 0.0% | |
| Aberystwyth Innovation and Enterprise Campus Ltd | Other | 1 | £0k | 0.0% | |
| Procurement and Logistics Service | Other | 6 | £0k | 0.0% | |
| NI Water and its subsidiaries | Other | 1 | £0k | 0.0% | |