| The Association of North East Councils Limited | Other | 7 | £213m | 21.8% | 2026-04-09 |
| Crown Commercial Service | Other | 2 | £200m | 20.6% | 2020-09-07 |
| Mid South Essex NHS Foundation TrustNew | Other | 4 | £80m | 8.2% | 2025-08-01 |
| NHS Supply Chain | Other | 9 | £73m | 7.5% | 2024-12-23 |
| Northern Procurement Group Limited | Other | 1 | £59m | 6.0% | 2016-12-13 |
| YPO | Other | 21 | £51m | 5.2% | 2021-04-16 |
| Ministry of Defence | Other | 1 | £40m | 4.1% | 2021-01-19 |
| Ministry of Justice | Other | 4 | £32m | 3.3% | 2025-03-21 |
| The Police and Crime Commissioner for NorthumbriaNew | Other | 2 | £31m | 3.1% | 2026-04-13 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £30m | 3.1% | 2021-02-12 |
| Espo | Other | 21 | £19m | 2.0% | 2022-04-20 |
| Post Office Limited | Other | 1 | £19m | 1.9% | 2020-12-31 |
| the Education AuthorityNew | Other | 20 | £11m | 1.1% | 2026-02-18 |
| Yorkshire Purchasing Organisation | Other | 4 | £10m | 1.0% | 2025-12-10 |
| North Western Universities Purchasing Consortium | Other | 10 | £10m | 1.0% | 2025-05-16 |
| Procurement for Housing | Other | 14 | £7m | 0.7% | 2025-07-01 |
| HM Revenue & Customs | Other | 1 | £6m | 0.6% | 2021-02-01 |
| SUPPLY CHAIN COORDINATION LIMITEDNew | Other | 19 | £6m | 0.6% | 2026-02-13 |
| Department for Work & Pensions | Other | 2 | £5m | 0.6% | 2025-11-01 |
| North of England Commercial Procurement Collaborative (NOE CPC) | Other | 2 | £5m | 0.5% | 2021-03-25 |
| Department for Education | Other | 3 | £5m | 0.5% | 2025-11-27 |
| BELFAST HEALTH AND SOCIAL CARE TRUSTNew | Other | 3 | £5m | 0.5% | 2026-04-01 |
| Transport for LondonNew | Other | 1 | £5m | 0.5% | 2026-03-16 |
| UNIVERSITY OF SOUTHAMPTON | Other | 4 | £4m | 0.4% | 2025-03-18 |
| H M REVENUE & CUSTOMSNew | Other | 1 | £4m | 0.4% | 2026-01-12 |
| Sanctuary Housing Association | Other | 1 | £3m | 0.3% | 2023-11-30 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 7 | £3m | 0.3% | 2025-06-06 |
| Driver and Vehicle Licensing Agency | Other | 3 | £3m | 0.3% | 2026-04-21 |
| Department for International Trade | Other | 2 | £3m | 0.3% | 2020-07-06 |
| UK Health Security AgencyNew | Other | 1 | £2m | 0.2% | 2026-01-09 |
| Care Quality Commission | Other | 5 | £1m | 0.2% | 2025-01-31 |
| HM Land Registry | Other | 1 | £1m | 0.1% | 2020-12-18 |
| NORTH WESTERN UNIVERSITIES PURCHASING CONSORTIUM LIMITED | Other | 1 | £1m | 0.1% | 2020-03-20 |
| Ofsted | Other | 2 | £1m | 0.1% | 2023-03-31 |
| Essex County Council | Other | 2 | £1m | 0.1% | 2025-10-28 |
| Office for National Statistics | Other | 3 | £1m | 0.1% | 2024-12-17 |
| DRIVER & VEHICLE LICENSING AGENCY | Other | 1 | £974k | 0.1% | 2021-01-01 |
| UKHSA | Other | 1 | £858k | 0.1% | 2023-07-05 |
| DVSA - Driver and Vehicle Standards AgencyNew | Other | 1 | £850k | 0.1% | 2025-03-17 |
| MCA - Maritime and Coastguard Agency | Other | 8 | £834k | 0.1% | 2024-03-31 |
| CPSNew | Other | 1 | £803k | 0.1% | 2025-05-19 |
| NEUPC Ltd | Other | 2 | £762k | 0.1% | 2023-07-13 |
| Birmingham City CouncilNew | Other | 1 | £752k | 0.1% | 2025-04-23 |
| Cumbria County Council | Other | 1 | £662k | 0.1% | 2020-10-23 |
| Leeds City Council | Other | 2 | £613k | 0.1% | 2020-02-11 |
| ICS on behalf of DSIT and DESNZNew | Other | 1 | £600k | 0.1% | 2025-10-13 |
| Royal Borough of Kensington and ChelseaNew | Other | 1 | £588k | 0.1% | 2025-03-14 |
| Homes England (the name adopted by the Homes and Communities Agency) | Other | 2 | £570k | 0.1% | 2025-05-31 |
| Lancashire County CouncilNew | Other | 1 | £480k | 0.0% | 2025-03-05 |
| Thirteen Housing Group Limited | Other | 3 | £466k | 0.0% | 2024-01-02 |
| North Northamptonshire Council | Other | 1 | £450k | 0.0% | 2021-09-23 |
| The Police, Fire and Crime Commissioner for NorthamptonshireNew | Other | 1 | £443k | 0.0% | 2025-08-14 |
| Government Commercial Agency | Other | 1 | £425k | 0.0% | 2021-08-19 |
| Greenshaw Learning Trust | Other | 3 | £421k | 0.0% | 2022-05-03 |
| UNIVERSITY OF EAST ANGLIANew | Other | 1 | £414k | 0.0% | 2026-01-06 |
| NHS BSANew | Other | 1 | £404k | 0.0% | 2024-10-01 |
| Nottingham Trent UniversityNew | Other | 1 | £400k | 0.0% | 2025-07-15 |
| London Borough of CamdenNew | Other | 1 | £400k | 0.0% | 2024-09-30 |
| The Insolvency Service | Other | 2 | £392k | 0.0% | 2025-07-22 |
| Lincolnshire County Council | Other | 1 | £377k | 0.0% | 2024-03-31 |
| Hampshire and Isle of Wight Fire and Rescue Authority New | Other | 1 | £375k | 0.0% | 2025-09-20 |
| Financial Ombudsman Service | Other | 1 | £365k | 0.0% | 2022-01-06 |
| Norfolk County Council | Other | 1 | £353k | 0.0% | 2017-12-28 |
| Cyngor Sir Ceredigion County CouncilNew | Other | 3 | £342k | 0.0% | 2025-12-18 |
| Kent County Council (t/a KCS) | Other | 12 | £333k | 0.0% | 2021-04-01 |
| British Transport Police | Other | 2 | £303k | 0.0% | 2022-12-07 |
| Bath and North East Somerset CouncilNew | Other | 1 | £300k | 0.0% | 2026-02-27 |
| Brighton and Hove City CouncilNew | Other | 1 | £284k | 0.0% | 2024-06-18 |
| CHESHIRE EAST COUNCIL | Other | 2 | £258k | 0.0% | 2021-11-28 |
| Department for Environment Food & Rural AffairsNew | Other | 2 | £254k | 0.0% | 2025-04-16 |
| Department of Health and Social Care (T&T) | Other | 1 | £250k | 0.0% | 2021-07-25 |
| London Borough of Ealing | Other | 1 | £250k | 0.0% | 2021-03-15 |
| Northumbria Healthcare NHS Foundation TrustNew | Other | 1 | £245k | 0.0% | 2024-07-29 |
| London Ambulance Service NHS TrustNew | Other | 1 | £240k | 0.0% | 2024-09-03 |
| FCDO Services | Other | 3 | £235k | 0.0% | 2020-12-23 |
| City of Doncaster Council | Other | 2 | £232k | 0.0% | 2025-09-03 |
| TRINITY MULTI ACADEMY TRUSTNew | Other | 1 | £227k | 0.0% | 2025-07-17 |
| London Borough of Enfield | Other | 1 | £204k | 0.0% | 2023-08-31 |
| Nottingham City Council | Other | 1 | £200k | 0.0% | 2023-08-18 |
| University of Plymouth | Other | 1 | £200k | 0.0% | 2020-03-04 |
| University of Sunderland | Other | 2 | £200k | 0.0% | 2021-04-15 |
| whgNew | Other | 1 | £196k | 0.0% | 2025-06-30 |
| The National Archives | Other | 3 | £195k | 0.0% | 2026-03-27 |
| Royal Berkshire Fire Authority | Other | 1 | £194k | 0.0% | 2022-04-14 |
| HS2 | Other | 2 | £190k | 0.0% | 2023-09-29 |
| London Borough of Hillingdon | Other | 1 | £183k | 0.0% | 2022-08-11 |
| BANK OF ENGLAND | Other | 1 | £180k | 0.0% | 2023-10-27 |
| Derbyshire County Council | Other | 1 | £180k | 0.0% | 2021-09-09 |
| Competition and Markets Authority | Other | 2 | £176k | 0.0% | 2026-02-11 |
| Platform Housing GroupNew | Other | 1 | £174k | 0.0% | 2024-08-14 |
| University Of The West Of England | Other | 2 | £170k | 0.0% | 2018-08-09 |
| London Borough of Hammersmith & FulhamNew | Other | 1 | £165k | 0.0% | 2024-09-11 |
| BHR UNIVERSITY HOSPITALS NHS TRUST | Other | 1 | £161k | 0.0% | 2020-09-01 |
| West Northamptonshire Council | Other | 1 | £160k | 0.0% | 2021-11-26 |
| DERBY CITY COUNCIL | Other | 1 | £160k | 0.0% | 2021-11-24 |
| TRINITY HOUSE | Other | 1 | £160k | 0.0% | 2016-11-10 |
| Oldham Council | Other | 1 | £152k | 0.0% | 2022-07-21 |
| Cambridgeshire County CouncilNew | Other | 1 | £150k | 0.0% | 2025-03-01 |
| UNIVERSITY OF DERBY | Other | 1 | £150k | 0.0% | 2023-08-01 |
| NHS Digital | Other | 1 | £150k | 0.0% | 2022-05-25 |
| East Riding of Yorkshire | Other | 4 | £144k | 0.0% | 2020-10-01 |
| British Business Bank | Other | 2 | £140k | 0.0% | 2024-01-02 |
| Department of Health and Social Care (DHSC) | Other | 1 | £135k | 0.0% | 2016-04-29 |
| RICHMOND FELLOWSHIP(THE) | Other | 1 | £130k | 0.0% | 2023-09-17 |
| South Tyneside Council | Other | 1 | £130k | 0.0% | 2021-01-11 |
| Department for Culture, Media and Sport | Other | 2 | £129k | 0.0% | 2026-03-04 |
| Department of Health & Social Care | Other | 1 | £125k | 0.0% | 2020-12-22 |
| Milton Keynes CouncilNew | Other | 2 | £120k | 0.0% | 2025-11-24 |
| Salvation Army Housing Association | Other | 2 | £120k | 0.0% | 2025-03-06 |
| Leeds Beckett UniversityNew | Other | 2 | £120k | 0.0% | 2025-01-17 |
| Westmorland and Furness CouncilNew | Other | 1 | £114k | 0.0% | 2025-01-22 |
| Crawley Borough CouncilNew | Other | 1 | £109k | 0.0% | 2024-08-15 |
| Maritime & Coastguard Agency | Other | 1 | £106k | 0.0% | 2020-04-15 |
| Foreign Commonwealth and Development OfficeNew | Other | 1 | £105k | 0.0% | 2024-11-12 |
| Home OfficeNew | Other | 1 | £100k | 0.0% | 2024-12-01 |
| One Manchester Limited | Other | 1 | £100k | 0.0% | 2023-12-04 |
| DfTc - Department for Transport | Other | 1 | £100k | 0.0% | 2023-01-17 |
| University for the Creative Arts | Other | 1 | £100k | 0.0% | 2022-03-07 |
| Government Legal Department | Other | 1 | £100k | 0.0% | 2020-12-18 |
| Norwich City Council | Other | 1 | £100k | 0.0% | 2018-06-06 |
| OPEN UNIVERSITY(THE)New | Other | 1 | £100k | 0.0% | 2025-11-24 |
| Corserv Limited | Other | 2 | £92k | 0.0% | 2022-03-07 |
| UNIVERSITY OF WOLVERHAMPTON ENTERPRISE LIMITED | Other | 1 | £86k | 0.0% | 2023-03-03 |
| Sport England | Other | 1 | £80k | 0.0% | 2020-12-04 |
| Intellectual Property Office | Other | 2 | £78k | 0.0% | 2025-12-04 |
| SERIOUS FRAUD OFFICE | Other | 2 | £70k | 0.0% | 2025-01-04 |
| Office of Qualifications and Examinations Regulation (Ofqual) | Other | 1 | £65k | 0.0% | 2021-01-01 |
| Regulator of Social HousingNew | Other | 1 | £60k | 0.0% | 2026-02-02 |
| GREAT BRITISH NUCLEAR LIMITED | Other | 1 | £60k | 0.0% | 2023-11-22 |
| TOGETHER HOUSING GROUP LIMITED | Other | 1 | £60k | 0.0% | 2023-11-06 |
| Ofgem | Other | 1 | £60k | 0.0% | 2023-08-02 |
| Erewash Borough Council | Other | 1 | £53k | 0.0% | 2017-10-25 |
| Hastings Borough Council | Other | 2 | £52k | 0.0% | 2026-01-28 |
| Royal Northern College of Music | Other | 1 | £51k | 0.0% | 2022-03-16 |
| London Borough of Bromley | Other | 1 | £50k | 0.0% | 2021-12-21 |
| Health & Safety Executive | Other | 1 | £50k | 0.0% | 2021-06-28 |
| COLLEGE OF POLICING LIMITED | Other | 1 | £50k | 0.0% | 2020-12-01 |
| Futures Housing Group | Other | 1 | £50k | 0.0% | 2017-12-21 |
| University of Bristol | Other | 1 | £49k | 0.0% | 2020-08-03 |
| Redditch Borough CouncilNew | Other | 1 | £45k | 0.0% | 2025-09-30 |
| North Lincolnshire CouncilNew | Other | 1 | £44k | 0.0% | 2024-08-05 |
| NORTH EAST SURREY COLLEGE OF TECHNOLOGY TRUST | Other | 1 | £43k | 0.0% | 2020-03-23 |
| East Riding of Yorkshire CouncilNew | Other | 2 | £43k | 0.0% | 2024-09-23 |
| University of WorcesterNew | Other | 1 | £40k | 0.0% | 2025-06-20 |
| Worcestershire County Council | Other | 1 | £39k | 0.0% | 2022-11-11 |
| Wealden District Council | Other | 1 | £35k | 0.0% | 2021-12-20 |
| Hereford & Worcester Fire & Rescue Service | Other | 1 | £34k | 0.0% | 2019-10-08 |
| Paradigm Housing GroupNew | Other | 1 | £34k | 0.0% | 2025-01-31 |
| Rail Safety and Standards BoardNew | Other | 1 | £32k | 0.0% | 2025-01-20 |
| The Pensions RegulatorNew | Other | 1 | £30k | 0.0% | 2025-01-17 |
| Equality and Human Rights Commission | Other | 3 | £30k | 0.0% | 2024-08-22 |
| NATIONAL WEALTH FUND LIMITEDNew | Other | 1 | £28k | 0.0% | 2025-09-16 |
| Royal Borough of Kingston Upon Thames | Other | 1 | £28k | 0.0% | 2023-06-30 |
| Halton Housing Trust | Other | 1 | £26k | 0.0% | 2017-04-07 |
| UK INFRASTRUCTURE BANK LIMITED | Other | 1 | £25k | 0.0% | 2023-09-29 |
| Epping Forest District Council | Other | 1 | £25k | 0.0% | 2019-01-09 |
| Bromsgrove District CouncilNew | Other | 1 | £23k | 0.0% | 2025-09-30 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNITNew | Other | 1 | £22k | 0.0% | 2025-03-11 |
| UK Export FinanceNew | Other | 1 | £20k | 0.0% | 2024-12-11 |
| UNIVERSITY OF SALFORD(THE)New | Other | 1 | £18k | 0.0% | 2025-05-19 |
| Parliamentary and Health Service OmbudsmanNew | Other | 1 | £17k | 0.0% | 2024-12-20 |
| NS&I | Other | 1 | £16k | 0.0% | 2021-12-08 |
| Hampshire County Council | Other | 15 | £13k | 0.0% | 2025-02-07 |
| High Speed Two (HS2) Limited | Other | 1 | £11k | 0.0% | 2022-02-15 |
| Rother District Council | Other | 1 | £8k | 0.0% | 2021-12-20 |
| Ryedale District Council | Other | 1 | £6k | 0.0% | 2021-08-20 |
| Herefordshire and Worcestershire Health and Care NHS Trust | Other | 1 | £5k | 0.0% | 2023-03-09 |
| Sandwell Metropolitan Borough Council | Other | 8 | £1k | 0.0% | 2019-05-07 |
| COUNTESS OF CHESTER HOSPITAL NHS FOUNDATION TRUST | Other | 1 | £0k | 0.0% | 2020-06-01 |
| Leicestershire County Council, trading as ESPONew | Other | 12 | £0k | 0.0% | 2026-02-12 |
| Hertfordshire County Council - ResourcesNew | Other | 1 | £0k | 0.0% | 2025-07-22 |
| Supply Hertfordshire | Other | 2 | £0k | 0.0% | 2020-07-27 |
| SE Shared Services | Other | 1 | £0k | 0.0% | 2017-07-04 |
| Basingstoke and Deane Borough Council | Other | 1 | £0k | 0.0% | 2017-03-31 |
| NOE CPC | Other | 1 | £0k | 0.0% | 2016-12-20 |
| Rochdale Borough Council | Other | 1 | £0k | 0.0% | |
| TAMESIDE METROPOLITAN BOROUGH COUNCIL | Other | 1 | £0k | 0.0% | |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 1 | £0k | 0.0% | |
| Hereford and Worcester Fire Authority | Other | 1 | £0k | 0.0% | |
| Places for People Group Limited | Other | 1 | £0k | 0.0% | |
| Tunbridge Wells Borough Council | Other | 2 | £0k | 0.0% | |
| NHS Supply Chain operated by North of England Commercial Procurement Collaborative (who are hosted by Leeds and York Partnership NHS Foundation Trust) acting on behalf of Supply Chain Coordination Ltd | Other | 29 | £0k | 0.0% | |
| Torbay Council | Other | 5 | £0k | 0.0% | |
| Trafford Council | Other | 1 | £0k | 0.0% | |
| Social Security Scotland | Other | 2 | £0k | 0.0% | |
| City & County of Swansea | Other | 1 | £0k | 0.0% | |
| NI Ambulance Service Trust | Other | 4 | £0k | 0.0% | |
| The Police and Crime Commissioner for Humberside | Other | 1 | £0k | 0.0% | |
| South Wales Fire and Rescue Service | Other | 3 | £0k | 0.0% | |
| APUC Limited | Other | 1 | £0k | 0.0% | |
| Education Buying Group Ltd | Other | 2 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 7 | £0k | 0.0% | |
| North East Lincolnshire Borough Council | Other | 1 | £0k | 0.0% | |
| NHS Supply Chain Coordination | Other | 3 | £0k | 0.0% | |
| Welsh Government | Other | 1 | £0k | 0.0% | |
| Patient and Client Council (PCC) | Other | 2 | £0k | 0.0% | |
| Llywodraeth Cymru / Welsh Government - Commercial Delivery | Other | 1 | £0k | 0.0% | |
| London Universities Purchasing Consortium | Other | 1 | £0k | 0.0% | |
| Simon Hastings (HCC) | Other | 1 | £0k | 0.0% | |
| Ards and North Down Borough Council | Other | 1 | £0k | 0.0% | |
| ORDNANCE SURVEY LIMITED | Other | 1 | £0k | 0.0% | |
| London Borough of Bexley | Other | 1 | £0k | 0.0% | |
| UK Research and Innovation | Other | 1 | £0k | 0.0% | |
| GREAT BRITISH ENERGY - NUCLEAR | Other | 1 | £0k | 0.0% | |
| Cardiff and Vale University Health Board | Other | 1 | £0k | 0.0% | |
| Southern Health and Social Care Trust | Other | 2 | £0k | 0.0% | |
| HEART ACADEMIES TRUST | Other | 1 | £0k | 0.0% | |
| REGENDA LIMITED | Other | 1 | £0k | 0.0% | |
| Department of Finance | Other | 1 | £0k | 0.0% | |
| Cumberland Council | Other | 1 | £0k | 0.0% | |
| Middletown Centre for Autism | Other | 1 | £0k | 0.0% | |
| N H S Supply Chain | Other | 2 | £0k | 0.0% | |
| COLLABORATIVE PROCUREMENT PARTNERSHIP LLP | Other | 1 | £0k | 0.0% | |
| DRIVER & VEHICLE LICENSING AGENCY | Other | 1 | £0k | 0.0% | |
| Scottish Government | Other | 1 | £0k | 0.0% | |
| COUNCIL FOR THE CURRICULUM EXAMINATIONS & ASSESSMENT | Other | 1 | £0k | 0.0% | |
| Northern Ireland Housing Executive | Other | 1 | £0k | 0.0% | |
| Education Authority NI | Other | 1 | £0k | 0.0% | |