| Department for Education | Other | 3 | £35m | 30.3% | 2022-06-30 |
| Espo | Other | 3 | £24m | 20.7% | 2024-03-26 |
| N H S Shared Business Services | Other | 1 | £17m | 14.2% | 2023-11-07 |
| NHS Commissioning Board | Other | 1 | £16m | 13.7% | 2016-04-29 |
| NOE CPC | Other | 2 | £5m | 3.9% | 2021-03-12 |
| YPO | Other | 2 | £3m | 2.4% | 2019-06-14 |
| North Western Universities Purchasing Consortium | Other | 15 | £3m | 2.1% | 2021-04-30 |
| Lancashire County Council | Other | 2 | £1m | 1.0% | 2025-04-01 |
| Telford & Wrekin Council | Other | 2 | £1m | 0.9% | 2022-01-25 |
| South West Police Procurement Department (SWPPD) | Other | 1 | £960k | 0.8% | 2020-10-05 |
| Nottinghamshire County Council | Other | 2 | £860k | 0.7% | 2020-11-09 |
| NHS Property Services Limited | Other | 2 | £781k | 0.7% | 2023-04-27 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITED | Other | 1 | £775k | 0.7% | 2020-12-17 |
| Leeds City Council | Other | 2 | £537k | 0.5% | 2022-10-13 |
| Cumbria County Council | Other | 1 | £457k | 0.4% | 2021-05-20 |
| Greater Manchester Combined Authority - Greater Manchester Police | Other | 1 | £420k | 0.4% | 2020-07-03 |
| WaythroughNew | Other | 1 | £385k | 0.3% | 2025-12-15 |
| Brighton and Hove City CouncilNew | Other | 1 | £355k | 0.3% | 2024-08-16 |
| 7 Forces Commercial ServicesNew | Other | 4 | £331k | 0.3% | 2025-04-04 |
| South Yorkshire Police HeadquartersNew | Other | 1 | £325k | 0.3% | 2025-05-01 |
| North Yorkshire County Council | Other | 1 | £315k | 0.3% | 2023-07-01 |
| NHS HUMBER & NORTH YORKSHIRE ICBNew | Other | 1 | £292k | 0.2% | 2025-03-08 |
| DERBY CITY COUNCIL | Other | 1 | £290k | 0.2% | 2023-06-28 |
| Leicestershire County CouncilNew | Other | 1 | £280k | 0.2% | 2026-02-13 |
| Coventry UniversityNew | Other | 1 | £280k | 0.2% | 2025-10-31 |
| Community Health Partnerships Limited | Other | 1 | £267k | 0.2% | 2020-11-30 |
| Wolverhampton City Council | Other | 1 | £240k | 0.2% | 2020-04-29 |
| NHS Shared Business Services (Commercial Procurement Solutions) | Other | 1 | £219k | 0.2% | 2023-12-15 |
| IslingtonNew | Other | 1 | £206k | 0.2% | 2025-03-11 |
| Cyngor Sir Ceredigion County CouncilNew | Other | 1 | £180k | 0.2% | 2025-12-18 |
| Liverpool City Council | Other | 1 | £176k | 0.2% | 2016-10-24 |
| London Borough of CamdenNew | Other | 1 | £175k | 0.1% | 2024-10-14 |
| Nottingham City Council | Other | 1 | £160k | 0.1% | 2019-09-30 |
| ASTON UNIVERSITYNew | Other | 1 | £159k | 0.1% | 2025-09-17 |
| NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUSTNew | Other | 1 | £151k | 0.1% | 2025-07-18 |
| Royal Holloway and Bedford New College | Other | 2 | £144k | 0.1% | 2024-03-15 |
| Barts Health NHS Trust | Other | 1 | £139k | 0.1% | 2023-04-26 |
| North Warwickshire & Hinckley Collaborative | Other | 1 | £137k | 0.1% | 2022-07-25 |
| Sheffield City Council | Other | 1 | £124k | 0.1% | 2016-12-23 |
| Isle of Wight Council | Other | 2 | £114k | 0.1% | 2026-03-13 |
| Askham Bryan CollegeNew | Other | 1 | £100k | 0.1% | 2026-02-06 |
| University of Lincoln | Other | 1 | £98k | 0.1% | 2022-07-27 |
| Middlesbrough College | Other | 1 | £93k | 0.1% | 2020-02-13 |
| Cheshire College South and West | Other | 1 | £85k | 0.1% | 2023-02-07 |
| Leeds Arts University | Other | 1 | £84k | 0.1% | 2023-11-24 |
| Coventry City Council | Other | 1 | £79k | 0.1% | 2023-03-02 |
| Durham ConstabularyNew | Other | 1 | £75k | 0.1% | 2025-03-15 |
| UNIVERSITY OF EXETER | Other | 1 | £75k | 0.1% | 2024-02-26 |
| North Warwickshire and South Leicestershire CollegeNew | Other | 1 | £74k | 0.1% | 2025-05-13 |
| Police and Crime Commissioner for Lincolnshire | Other | 2 | £73k | 0.1% | 2026-02-25 |
| NOTTINGHAMSHIRE POLICENew | Other | 1 | £70k | 0.1% | 2024-05-31 |
| North East Lincolnshire CouncilNew | Other | 1 | £68k | 0.1% | 2024-11-29 |
| Plymouth City CouncilNew | Other | 2 | £65k | 0.1% | 2025-01-29 |
| Bradford Teaching Hospitals NHS Foundation Trust | Other | 1 | £65k | 0.1% | 2016-06-07 |
| The Oldham CollegeNew | Other | 1 | £62k | 0.1% | 2024-10-17 |
| University of Plymouth | Other | 1 | £62k | 0.1% | 2019-06-06 |
| CHESHIRE EAST COUNCILNew | Other | 1 | £60k | 0.1% | 2025-08-11 |
| The City of Liverpool CollegeNew | Other | 1 | £58k | 0.0% | 2025-04-24 |
| Leicestershire PoliceNew | Other | 1 | £56k | 0.0% | 2025-07-01 |
| Keele University | Other | 1 | £55k | 0.0% | 2023-08-21 |
| Salford City College | Other | 1 | £50k | 0.0% | 2024-01-15 |
| Ipswich Borough Council | Other | 1 | £48k | 0.0% | 2020-07-21 |
| Yorkshire Purchasing Organisation | Other | 1 | £48k | 0.0% | 2020-02-17 |
| Lancashire Constabulary | Other | 1 | £48k | 0.0% | 2021-08-31 |
| City of Bristol College | Other | 1 | £43k | 0.0% | 2023-10-04 |
| Harrogate Borough Council | Other | 1 | £41k | 0.0% | 2015-02-26 |
| Cornwall Council | Other | 1 | £40k | 0.0% | 2017-04-11 |
| Anglia Ruskin University | Other | 1 | £38k | 0.0% | 2021-01-22 |
| KETTERING GENERAL HOSPITAL NHS FOUNDATION TRUSTNew | Other | 1 | £36k | 0.0% | 2024-10-14 |
| Thirteen Housing Group Limited | Other | 1 | £35k | 0.0% | 2021-11-08 |
| Worcestershire County Council | Other | 1 | £35k | 0.0% | 2022-01-20 |
| Forestry England | Other | 1 | £33k | 0.0% | 2021-09-27 |
| City of London Corporation | Other | 1 | £33k | 0.0% | 2023-02-02 |
| Herefordshire Council | Other | 1 | £33k | 0.0% | 2022-05-24 |
| Hopwood Hall College | Other | 1 | £31k | 0.0% | 2024-01-31 |
| Staffordshire County Council | Other | 1 | £30k | 0.0% | 2022-06-20 |
| City of York Council | Other | 1 | £30k | 0.0% | 2020-10-23 |
| Hull City Council | Other | 1 | £25k | 0.0% | 2023-02-02 |
| University of Brighton | Other | 1 | £22k | 0.0% | 2023-06-28 |
| Tameside CollegeNew | Other | 1 | £21k | 0.0% | 2024-09-04 |
| Colchester Institute | Other | 1 | £20k | 0.0% | 2019-07-22 |
| Nuneaton & Bedworth Borough Council | Other | 1 | £20k | 0.0% | 2020-05-28 |
| Optivo | Other | 1 | £18k | 0.0% | 2018-09-28 |
| University of Bedfordshire | Other | 2 | £17k | 0.0% | 2025-07-09 |
| New College Swindon | Other | 1 | £16k | 0.0% | 2022-05-31 |
| Broadacres Housing AssociationNew | Other | 1 | £15k | 0.0% | 2024-06-11 |
| Redcar & Cleveland College | Other | 1 | £8k | 0.0% | 2021-06-16 |
| CRESCENT PURCHASING LIMITED | Other | 1 | £1k | 0.0% | 2020-10-16 |
| Kirklees College | Other | 1 | £0k | 0.0% | 2022-12-21 |
| Peterborough College | Other | 1 | £0k | 0.0% | 2022-03-15 |
| Heart of Worcestershire College | Other | 1 | £0k | 0.0% | 2021-07-20 |
| Nottingham Trent University | Other | 1 | £0k | 0.0% | 2019-12-11 |
| Telford & Wrekin Council | Other | 1 | £0k | 0.0% | 2019-01-08 |
| SPS | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 7 | £0k | 0.0% | |
| GREENSQUAREACCORD LIMITED | Other | 1 | £0k | 0.0% | |
| NI Medical and Dental Training Agency | Other | 1 | £0k | 0.0% | |
| Llywodraeth Cymru / Welsh Government - Commercial Delivery | Other | 2 | £0k | 0.0% | |
| Cardiff University | Other | 1 | £0k | 0.0% | |
| North of England Commercial Procurement Collaborative (NOE CPC) | Other | 2 | £0k | 0.0% | |
| NHS Ayrshire & Arran | Other | 1 | £0k | 0.0% | |
| COUNTESS OF CHESTER HOSPITAL NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| United Lincolnshire Hospitals NHS Trust | Other | 1 | £0k | 0.0% | |
| Armagh Observatory | Other | 1 | £0k | 0.0% | |
| North Warwickshire & Hinckley Collaborative | Other | 1 | £0k | 0.0% | |