| London Borough of Waltham ForestNew | Other | 2 | £100m | 78.9% | 2026-02-24 |
| Espo | Other | 7 | £17m | 13.4% | 2022-07-06 |
| Surrey and Borders Partnership NHS Foundation Trust | Other | 1 | £2m | 1.5% | 2023-04-18 |
| West Sussex County Council | Other | 2 | £913k | 0.7% | 2024-04-18 |
| Lancashire County Council | Other | 1 | £900k | 0.7% | 2016-02-24 |
| London Borough of Bromley | Other | 4 | £897k | 0.7% | 2023-03-05 |
| Surrey County Council | Other | 1 | £853k | 0.7% | 2023-03-30 |
| NHS Blood and Transplant (NHSBT)New | Other | 1 | £652k | 0.5% | 2025-10-11 |
| Cafcass | Other | 1 | £625k | 0.5% | 2020-05-25 |
| Nottinghamshire County Council | Other | 1 | £608k | 0.5% | 2023-06-05 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £357k | 0.3% | 2020-07-27 |
| United Lincolnshire Hospitals NHS TrustNew | Other | 1 | £317k | 0.2% | 2024-05-28 |
| Kent County Council | Other | 1 | £255k | 0.2% | 2022-12-12 |
| NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUST | Other | 1 | £225k | 0.2% | 2023-03-22 |
| Halton Borough Council | Other | 1 | £220k | 0.2% | 2022-02-08 |
| Manchester City Council | Other | 1 | £207k | 0.2% | 2018-06-30 |
| Leeds City Council | Other | 2 | £162k | 0.1% | 2023-06-05 |
| DONCASTER CHILDREN'S SERVICES TRUST LIMITED | Other | 1 | £140k | 0.1% | 2022-01-12 |
| Bath and Northeast Somerset, Swindon and Wiltshire STP | Other | 1 | £111k | 0.1% | 2019-02-21 |
| DERBYSHIRE COMMUNITY HEALTH SERVICES NHS FOUNDATION TRUST | Other | 2 | £81k | 0.1% | 2022-12-04 |
| Health and Safety Executive | Other | 2 | £77k | 0.1% | 2020-12-31 |
| North East Lincolnshire CouncilNew | Other | 1 | £75k | 0.1% | 2024-10-04 |
| O F W A TNew | Other | 1 | £64k | 0.1% | 2026-02-27 |
| Central and North West London NHS Foundation Trust | Other | 1 | £40k | 0.0% | 2016-10-17 |
| NHS Arden and Greater East Midlands Commissioning Support UnitNew | Other | 1 | £36k | 0.0% | 2024-11-11 |
| Birmingham City Council | Other | 1 | £32k | 0.0% | 2020-02-13 |
| Hull City Council | Other | 1 | £30k | 0.0% | 2024-01-24 |
| Department for Work & Pensions | Other | 1 | £27k | 0.0% | 2017-09-27 |
| Department of Health & Social Care | Other | 1 | £24k | 0.0% | 2021-11-10 |
| Department of Health and Social Care (DHSC) | Other | 2 | £22k | 0.0% | 2022-01-12 |
| Saltwood C Of E Primary School | Other | 1 | £0k | 0.0% | 2016-01-01 |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITED | Other | 3 | £0k | 0.0% | |
| Surrey and Borders Partnership NHS Foundation Trust on behalf of NHS Commercial Solutions | Other | 1 | £0k | 0.0% | |
| Newcastle City Council | Other | 1 | £0k | 0.0% | |
| Salford City College | Other | 1 | £0k | 0.0% | |
| Southern Universities Purchasing Consortium (SUPC) | Other | 3 | £0k | 0.0% | |
| Rutland County Council | Other | 2 | £0k | 0.0% | |
| City & County of Swansea | Other | 2 | £0k | 0.0% | |
| London Councils | Other | 2 | £0k | 0.0% | |
| HealthTrust Europe LLP (HTE) acting on behalf of | Other | 4 | £0k | 0.0% | |
| Torbay Council | Other | 2 | £0k | 0.0% | |
| Scotland Excel | Other | 1 | £0k | 0.0% | |
| NHS National Services Scotland | Other | 1 | £0k | 0.0% | |
| The Common Services Agency (more commonly known as NHS National Services Scotland) (NSS) | Other | 1 | £0k | 0.0% | |
| Mid and South Essex NHS Foundation Trust | Other | 5 | £0k | 0.0% | |
| DONCASTER CHILDREN'S SERVICES TRUST LIMITED | Other | 1 | £0k | 0.0% | |