| SUPPLY CHAIN COORDINATION LIMITEDNew | Other | 4 | £19m | 34.7% | 2025-09-03 |
| Norfolk and Norwich University Hospitals NHS Foundation Trust | Other | 3 | £9m | 16.3% | 2025-04-17 |
| NHS Supply Chain | Other | 9 | £8m | 14.4% | 2022-10-27 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 12 | £2m | 2.7% | 2024-01-30 |
| CENTRE FOR PROCESS INNOVATION LIMITED | Other | 3 | £1m | 1.9% | 2021-04-29 |
| Newcastle University | Other | 12 | £977k | 1.8% | 2022-10-21 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 22 | £815k | 1.5% | 2025-01-15 |
| DEFRA | Other | 9 | £808k | 1.5% | 2023-01-31 |
| Great Ormond Street Hospital for Children NHS Foundation TrustNew | Other | 2 | £671k | 1.2% | 2026-01-26 |
| Hull University Teaching Hospitals NHS Trust | Other | 13 | £638k | 1.1% | 2023-08-31 |
| University of Plymouth | Other | 2 | £631k | 1.1% | 2022-12-13 |
| UK Health Security Agency | Other | 8 | £605k | 1.1% | 2026-03-25 |
| Partners Procurement Service (PPS) | Other | 8 | £593k | 1.1% | 2025-04-01 |
| UK RESEARCH & INNOVATION | Other | 7 | £585k | 1.1% | 2025-02-07 |
| Police and Crime Commissioner for West MidlandsNew | Other | 2 | £541k | 1.0% | 2025-03-28 |
| United Lincolnshire Teaching Hospitals NHS Trust DO NOT USENew | Other | 1 | £506k | 0.9% | 2026-02-18 |
| Leeds Teaching Hospitals NHS Trust | Other | 5 | £501k | 0.9% | 2026-01-23 |
| United Lincolnshire Teaching Hospitals NHS TrustNew | Other | 3 | £483k | 0.9% | 2026-02-24 |
| HULL ROYAL INFIRMARY | Other | 1 | £454k | 0.8% | 2021-12-01 |
| BIP SOLUTIONS LIMITED | Other | 2 | £424k | 0.8% | 2022-01-27 |
| Durham University | Other | 1 | £400k | 0.7% | 2018-09-30 |
| Swansea UniversityNew | Other | 2 | £387k | 0.7% | 2025-10-09 |
| The University of Nottingham | Other | 3 | £379k | 0.7% | 2022-03-01 |
| UNIVERSITY OF SHEFFIELD | Other | 3 | £376k | 0.7% | 2021-06-08 |
| UK Research and Innovation | Other | 13 | £367k | 0.7% | 2025-10-07 |
| UNIVERSITY OF SOUTHAMPTON | Other | 1 | £360k | 0.6% | 2023-04-18 |
| Teesside University | Other | 2 | £350k | 0.6% | 2019-02-19 |
| CAMBRIDGE UNIVERSITY HOSPITALS NHS FOUNDATION TRUSTNew | Other | 7 | £311k | 0.6% | 2026-03-11 |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust)New | Other | 12 | £301k | 0.5% | 2025-06-17 |
| BIRKBECK COLLEGE | Other | 3 | £299k | 0.5% | 2025-09-23 |
| ST HELENS & KNOWSLEY TEACHING HOSPITALS NHS TRUST | Other | 1 | £288k | 0.5% | 2022-09-28 |
| Sheffield Teaching Hospitals NHS Foundation TrustNew | Other | 2 | £265k | 0.5% | 2025-03-24 |
| Public Health England | Other | 5 | £261k | 0.5% | 2022-03-22 |
| University Of The West Of England | Other | 1 | £261k | 0.5% | 2017-06-26 |
| University of Leeds | Other | 2 | £232k | 0.4% | 2018-03-23 |
| ANIMAL AND PLANT HEALTH AGENCY | Other | 3 | £211k | 0.4% | 2023-06-15 |
| Hull & East Yorkshire Hospitals Nhs Trust | Other | 3 | £205k | 0.4% | 2019-12-31 |
| East Suffolk and North Essex NHS FT | Other | 1 | £205k | 0.4% | 2023-02-02 |
| The Christie NHS Foundation TrustNew | Other | 2 | £200k | 0.4% | 2026-02-28 |
| University of BristolNew | Other | 1 | £199k | 0.4% | 2024-12-16 |
| United Kingdom Atomic Energy Authority | Other | 1 | £196k | 0.4% | 2022-03-24 |
| Board of Trustees of the Royal Botanic Gardens Kew | Other | 5 | £190k | 0.3% | 2023-01-30 |
| UKRI | Other | 1 | £167k | 0.3% | 2020-12-19 |
| UNIVERSITY OF NOTTINGHAM (THE) | Other | 3 | £133k | 0.2% | 2020-03-06 |
| Mid Yorkshire Teaching NHS TrustNew | Other | 1 | £95k | 0.2% | 2024-12-23 |
| Hull and East Yorkshire Hospitals NHS Trust | Other | 1 | £81k | 0.1% | 2018-04-13 |
| Partners Procurement Service | Other | 1 | £72k | 0.1% | 2020-08-24 |
| UKHSA | Other | 1 | £69k | 0.1% | 2023-08-01 |
| Birmingham Women's and Children's NHS Foundation Trust | Other | 1 | £67k | 0.1% | 2021-03-12 |
| University of Warwick | Other | 1 | £59k | 0.1% | 2017-01-26 |
| UNIVERSITY OF HULL | Other | 1 | £50k | 0.1% | 2018-10-19 |
| DEFENCE RELATIONSHIP MANAGEMENT | Other | 1 | £47k | 0.1% | 2019-02-19 |
| University Hospitals of Derby and Burton NHS Foundation TrustNew | Other | 2 | £45k | 0.1% | 2026-05-12 |
| DERBYSHIRE SUPPORT FACILITIES SERVICES | Other | 2 | £42k | 0.1% | 2021-08-01 |
| National Physical Laboratory | Other | 1 | £41k | 0.1% | 2021-09-28 |
| UNIVERSITY OF EXETER | Other | 3 | £38k | 0.1% | 2017-05-22 |
| DERBYSHIRE SUPPORT FACILITIES SERVIICES | Other | 1 | £38k | 0.1% | 2021-08-01 |
| KETTERING GENERAL HOSPITAL NHS FOUNDATION TRUST | Other | 2 | £37k | 0.1% | 2022-09-12 |
| THE UNIVERSITY OF CUMBRIA | Other | 1 | £34k | 0.1% | 2024-01-18 |
| Royal Holloway and Bedford New College, known as Royal Holloway, University of London | Other | 1 | £25k | 0.0% | 2022-05-03 |
| Royal Botanic Gardens | Other | 1 | £17k | 0.0% | 2018-01-15 |
| Aneurin Bevan University Health Board | Other | 1 | £12k | 0.0% | 2020-02-04 |
| CENTRE FOR ENVIRONMENT, FISHERIES AND AQUACULTURE SCIENCENew | Other | 2 | £10k | 0.0% | 2024-06-26 |
| University of Brighton | Other | 1 | £0k | 0.0% | 2023-09-29 |
| Royal Free London NHS Foundation Trust | Other | 1 | £0k | 0.0% | 2022-09-12 |
| MEDICINES DISCOVERY CATAPULT | Other | 1 | £0k | 0.0% | 2019-02-21 |
| University Of Edinburgh | Other | 3 | £0k | 0.0% | |
| Cardiff University | Other | 1 | £0k | 0.0% | |
| NPL Management Limited | Other | 3 | £0k | 0.0% | |
| UNIVERSITY OF SUSSEX(THE) | Other | 1 | £0k | 0.0% | |
| NHS Grampian | Other | 1 | £0k | 0.0% | |
| University of Glasgow | Other | 2 | £0k | 0.0% | |
| THE ROYAL WOLVERHAMPTON NHS TRUST | Other | 2 | £0k | 0.0% | |
| ASTON UNIVERSITY | Other | 2 | £0k | 0.0% | |
| BELFAST HEALTH AND SOCIAL CARE TRUST | Other | 4 | £0k | 0.0% | |
| Queen's University Belfast | Other | 1 | £0k | 0.0% | |
| East Suffolk and North Essex NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| SOMERSET NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| AERA - AFBI | Other | 1 | £0k | 0.0% | |