| Crown Commercial Service | Other | 4 | £24m | 45.5% | 2022-02-02 |
| Espo | Other | 1 | £7m | 12.6% | 2019-06-25 |
| Hampshire County Council | Other | 8 | £4m | 7.6% | 2024-02-16 |
| Ministry of Defence | Other | 2 | £2m | 3.0% | 2021-07-29 |
| University of EssexNew | Other | 3 | £1m | 2.1% | 2025-07-18 |
| Newcastle University | Other | 2 | £897k | 1.7% | 2019-10-22 |
| South West Police Procurement Services | Other | 1 | £870k | 1.6% | 2021-07-07 |
| National Highways LimitedNew | Other | 1 | £810k | 1.5% | 2026-03-30 |
| DEFRA | Other | 2 | £802k | 1.5% | 2021-07-23 |
| Leicestershire Police | Other | 1 | £647k | 1.2% | 2019-11-27 |
| North Yorkshire County Council | Other | 3 | £633k | 1.2% | 2026-01-19 |
| DfTc - Department for Transport | Other | 2 | £596k | 1.1% | 2023-04-12 |
| Teignbridge District Council | Other | 2 | £583k | 1.1% | 2021-03-18 |
| NHS England | Other | 3 | £500k | 0.9% | 2025-01-06 |
| Manchester City Council | Other | 2 | £417k | 0.8% | 2017-03-28 |
| Department for Transport | Other | 1 | £390k | 0.7% | 2020-02-07 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 2 | £346k | 0.7% | 2022-02-01 |
| Blackpool Council | Other | 4 | £310k | 0.6% | 2025-05-30 |
| NHS Blood and Transplant (NHSBT)New | Other | 1 | £307k | 0.6% | 2024-08-07 |
| Sanctuary Housing Group | Other | 1 | £300k | 0.6% | 2017-10-16 |
| South West Police Procurement Department (SWPPD) | Other | 1 | £300k | 0.6% | 2017-05-30 |
| Home OfficeNew | Other | 1 | £299k | 0.6% | 2024-07-10 |
| OPEN UNIVERSITY(THE)New | Other | 1 | £284k | 0.5% | 2025-06-04 |
| Govia Thameslink Rail (GTR)New | Other | 2 | £268k | 0.5% | 2025-03-21 |
| University of ChesterNew | Other | 2 | £250k | 0.5% | 2024-08-30 |
| Nottinghamshire County CouncilNew | Other | 2 | £244k | 0.5% | 2026-03-31 |
| Sussex Community NHS Foundation Trust | Other | 1 | £226k | 0.4% | 2023-03-03 |
| Wirral Borough Council | Other | 1 | £220k | 0.4% | 2019-06-11 |
| Parliament UK | Other | 2 | £215k | 0.4% | 2018-10-23 |
| HM Land Registry | Other | 1 | £208k | 0.4% | 2021-10-18 |
| National Highways | Other | 1 | £202k | 0.4% | 2020-02-19 |
| DEPARTMENT FOR LEVELLING UP, HOUSING AND COMMUNITIES | Other | 1 | £200k | 0.4% | 2022-04-13 |
| Sheffield Hallam University | Other | 1 | £183k | 0.3% | 2019-09-03 |
| Yorkshire and Humber Police Procurement (Y&HPP) | Other | 2 | £176k | 0.3% | 2019-11-15 |
| Oxford City Council | Other | 1 | £175k | 0.3% | 2018-01-03 |
| Bournemouth Christchurch and Poole Council | Other | 2 | £175k | 0.3% | 2022-05-10 |
| West Northamptonshire Council | Other | 2 | £168k | 0.3% | 2025-06-01 |
| Cambridgeshire County CouncilNew | Other | 1 | £160k | 0.3% | 2024-10-31 |
| Durham University | Other | 1 | £160k | 0.3% | 2020-05-05 |
| Bury CollegeNew | Other | 1 | £139k | 0.3% | 2025-12-10 |
| Westmorland and Furness CouncilNew | Other | 1 | £133k | 0.3% | 2026-02-26 |
| Financial Conduct Authority | Other | 2 | £133k | 0.3% | 2022-06-06 |
| Disclosure and Barring Service | Other | 1 | £130k | 0.2% | 2020-03-09 |
| Disclosure and Barring Service : Home Office | Other | 1 | £130k | 0.2% | 2020-03-09 |
| HER MAJESTYS LAND REGISTRY | Other | 1 | £102k | 0.2% | 2017-08-31 |
| Commercial Support Manager | Other | 1 | £100k | 0.2% | 2023-08-16 |
| NHS Business Services Authority | Other | 1 | £96k | 0.2% | 2021-10-06 |
| Merseyside Fire and Rescue Authority | Other | 1 | £90k | 0.2% | 2022-02-01 |
| London Borough of Merton | Other | 1 | £88k | 0.2% | 2019-03-12 |
| Telford & Wrekin Council | Other | 1 | £82k | 0.2% | 2022-12-01 |
| Bath and North East Somerset CouncilNew | Other | 1 | £78k | 0.1% | 2024-10-31 |
| The Office for Standards in Education, Children's Services and SkillsNew | Other | 1 | £65k | 0.1% | 2025-12-17 |
| North Northamptonshire CouncilNew | Other | 1 | £64k | 0.1% | 2025-06-28 |
| Nottingham University Hospital NHS Trust | Other | 1 | £63k | 0.1% | 2023-03-06 |
| Milton Keynes Council | Other | 3 | £62k | 0.1% | 2022-05-30 |
| Leeds Beckett University | Other | 1 | £60k | 0.1% | 2019-08-01 |
| Coventry - Solihull - Warwickshire | Other | 1 | £60k | 0.1% | 2019-05-09 |
| Central Bedfordshire Council | Other | 1 | £57k | 0.1% | 2016-05-18 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 1 | £57k | 0.1% | 2023-05-30 |
| NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUST | Other | 1 | £57k | 0.1% | 2022-02-08 |
| Health and Safety Executive | Other | 1 | £56k | 0.1% | 2018-12-25 |
| Norse Commercial Services Ltd | Other | 1 | £52k | 0.1% | 2018-10-04 |
| Kent County CouncilNew | Other | 2 | £51k | 0.1% | 2026-03-31 |
| Civil Nuclear Police Authority (CNPA) / Civil Nuclear Constabulary (CNC) | Other | 1 | £50k | 0.1% | 2022-09-30 |
| Public Health England | Other | 1 | £50k | 0.1% | 2018-12-21 |
| MAIDSTONE AND TUNBRIDGE WELLS NHS TRUST | Other | 1 | £50k | 0.1% | 2016-07-01 |
| Ofsted | Other | 1 | £48k | 0.1% | 2021-12-31 |
| MCA - Maritime and Coastguard Agency | Other | 1 | £48k | 0.1% | 2023-04-12 |
| Bradford District Care Trust HQ | Other | 1 | £44k | 0.1% | 2022-09-07 |
| University of SuffolkNew | Other | 1 | £43k | 0.1% | 2025-12-09 |
| NHS Digital | Other | 1 | £41k | 0.1% | 2017-12-20 |
| Durham County Council | Other | 1 | £38k | 0.1% | 2020-03-31 |
| Merseyside Fire and Rescue Service | Other | 1 | £38k | 0.1% | 2016-12-12 |
| London Borough of Bromley | Other | 1 | £37k | 0.1% | 2019-11-15 |
| WIRRAL UNIVERSITY TEACHING HOSPITAL NHS FOUNDATION TRUST | Other | 2 | £35k | 0.1% | 2023-02-23 |
| Barnsley Metropolitan Borough Council | Other | 1 | £35k | 0.1% | 2021-01-13 |
| HEE | Other | 1 | £31k | 0.1% | 2021-05-21 |
| Chelmsford City Council | Other | 2 | £30k | 0.1% | 2023-02-13 |
| Shepway District Council | Other | 1 | £30k | 0.1% | 2016-12-22 |
| The Insolvency Service | Other | 1 | £29k | 0.1% | 2021-06-29 |
| Met Office | Other | 1 | £27k | 0.1% | 2022-02-14 |
| United Lincolnshire Teaching Hospitals NHS TrustNew | Other | 2 | £27k | 0.1% | 2025-01-31 |
| Royal Berkshire Fire Authority | Other | 1 | £22k | 0.0% | 2022-12-06 |
| University of BedfordshireNew | Other | 1 | £21k | 0.0% | 2025-09-25 |
| Wyre Forest District Council | Other | 1 | £21k | 0.0% | 2021-02-23 |
| National Citizen Service | Other | 1 | £18k | 0.0% | 2019-09-03 |
| Yorkshire Purchasing Organisation | Other | 1 | £15k | 0.0% | 2021-06-16 |
| Department for Work & Pensions | Other | 1 | £15k | 0.0% | 2021-07-01 |
| Board of Trustees of the Royal Botanic Gardens Kew | Other | 1 | £15k | 0.0% | 2019-07-03 |
| The National Archives | Other | 1 | £12k | 0.0% | 2017-11-23 |
| BFI | Other | 1 | £11k | 0.0% | 2022-04-01 |
| The City of Liverpool College | Other | 1 | £10k | 0.0% | 2023-08-22 |
| Office for Students | Other | 1 | £8k | 0.0% | 2023-03-28 |
| The Office of the Police and Crime Commissioner for Cleveland | Other | 1 | £6k | 0.0% | 2022-07-29 |
| Milton Keynes College | Other | 1 | £5k | 0.0% | 2020-10-29 |
| Warwickshire Police | Other | 1 | £5k | 0.0% | 2020-07-01 |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITEDNew | Other | 2 | £0k | 0.0% | 2025-06-25 |
| West Yorkshire Fire & Rescue | Other | 1 | £0k | 0.0% | 2023-07-03 |
| The Harmony Trust Ltd | Other | 1 | £0k | 0.0% | 2022-11-02 |
| REGENDA LIMITED | Other | 2 | £0k | 0.0% | 2021-05-04 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2017-10-30 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITED | Other | 1 | £0k | 0.0% | 2017-02-10 |
| Leeds and York Partnership NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| West Midlands Fire and Rescue Authority | Other | 1 | £0k | 0.0% | |
| EAST CHESHIRE NHS TRUST | Other | 1 | £0k | 0.0% | |
| The Police and Crime Commissioner for Humberside | Other | 1 | £0k | 0.0% | |
| North Somerset Council | Other | 1 | £0k | 0.0% | |
| HORNCHURCH ACADEMY TRUST | Other | 1 | £0k | 0.0% | |
| Caerphilly County Borough Council | Other | 1 | £0k | 0.0% | |
| The Police and Crime Commissioner for Surrey | Other | 1 | £0k | 0.0% | |
| University of Bath | Other | 1 | £0k | 0.0% | |
| APUC Limited | Other | 1 | £0k | 0.0% | |
| University of Glasgow | Other | 2 | £0k | 0.0% | |
| YPO | Other | 1 | £0k | 0.0% | |
| Cambridgeshire & Peterborough Foundation Trust | Other | 1 | £0k | 0.0% | |
| East of England Community Health and Care NHS Trust | Other | 1 | £0k | 0.0% | |
| COUNTESS OF CHESTER HOSPITAL NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | |
| Wigan Council | Other | 1 | £0k | 0.0% | |
| LONDON SOUTH BANK UNIVERSITY | Other | 1 | £0k | 0.0% | |
| Kent County Council (t/a KCS) | Other | 1 | £0k | 0.0% | |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 1 | £0k | 0.0% | |
| Lincolnshire Partnership NHS Foundation Trust | Other | 1 | £0k | 0.0% | |
| PLYMOUTH COMMUNITY HOMES LIMITED | Other | 1 | £0k | 0.0% | |