| Department for Work & Pensions | Other | 29 | £117m | 31.0% | 2025-04-23 |
| Department for Education | Other | 6 | £89m | 23.7% | 2021-01-29 |
| Transport for London | Other | 13 | £33m | 8.8% | 2019-10-29 |
| Ministry of Defence | Other | 11 | £28m | 7.4% | 2025-10-05 |
| BLUELIGHT COMMERCIAL LIMITEDNew | Other | 2 | £26m | 6.8% | 2025-01-31 |
| Ministry of JusticeNew | Other | 2 | £25m | 6.5% | 2025-03-25 |
| Cornwall Council | Other | 1 | £15m | 3.9% | 2022-03-10 |
| H M REVENUE & CUSTOMS | Other | 4 | £8m | 2.2% | 2024-10-17 |
| Financial Ombudsman Service | Other | 15 | £5m | 1.3% | 2025-03-14 |
| Yorkshire and Humber Police Procurement (Y&HPP) | Other | 1 | £5m | 1.2% | 2019-09-03 |
| DRIVER & VEHICLE LICENSING AGENCY | Other | 8 | £3m | 0.9% | 2020-07-20 |
| Kent Police | Other | 3 | £2m | 0.5% | 2025-11-27 |
| Met Office | Other | 14 | £2m | 0.5% | 2026-04-16 |
| National Highways Limited | Other | 2 | £2m | 0.4% | 2021-12-20 |
| South Yorkshire Police Headquarters | Other | 4 | £1m | 0.4% | 2025-10-20 |
| D V L A | Other | 6 | £1m | 0.4% | 2018-03-13 |
| Big Lottery Fund, operating as The National Lottery Community Fund | Other | 1 | £1m | 0.4% | 2017-11-07 |
| Department of Health and Social Care (DHSC) | Other | 2 | £1m | 0.3% | 2018-05-18 |
| Bath and North East Somerset Council | Other | 3 | £1m | 0.3% | 2022-03-09 |
| Office for National Statistics | Other | 4 | £998k | 0.3% | 2025-03-24 |
| Leicestershire Police | Other | 3 | £850k | 0.2% | 2017-06-02 |
| Hampshire County Council | Other | 2 | £847k | 0.2% | 2020-12-31 |
| Liverpool City Council | Other | 6 | £732k | 0.2% | 2018-05-23 |
| Student Loans Company | Other | 6 | £658k | 0.2% | 2025-07-25 |
| NHS Business Services Authority | Other | 2 | £641k | 0.2% | 2022-03-03 |
| Epsom & Ewell Borough Council | Other | 1 | £504k | 0.1% | 2022-03-27 |
| Norfolk Constabulary | Other | 5 | £429k | 0.1% | 2021-02-18 |
| London Borough of MertonNew | Other | 1 | £424k | 0.1% | 2024-08-06 |
| Foreign Commonwealth and Development Office | Other | 1 | £381k | 0.1% | 2019-02-11 |
| Staffordshire Police | Other | 3 | £371k | 0.1% | 2023-08-30 |
| Peterborough City Council | Other | 4 | £318k | 0.1% | 2024-04-25 |
| Intellectual Property Office | Other | 2 | £314k | 0.1% | 2016-12-23 |
| British Transport Police | Other | 1 | £293k | 0.1% | 2021-12-16 |
| STUDENT LOANS COMPANY LIMITEDNew | Other | 1 | £288k | 0.1% | 2025-03-17 |
| National Audit Office | Other | 1 | £240k | 0.1% | 2023-01-16 |
| Financial Conduct Authority | Other | 3 | £227k | 0.1% | 2019-03-01 |
| Leicestershire County Council | Other | 1 | £222k | 0.1% | 2018-01-26 |
| BCH Procurement (Representing The Police and Crime Commissioners for Bedfordshire, Cambridgeshire and Hertfordshire ) | Other | 1 | £220k | 0.1% | 2018-12-20 |
| POLICE DIGITAL SERVICENew | Other | 1 | £206k | 0.1% | 2026-03-11 |
| Department for Transport | Other | 1 | £193k | 0.1% | 2020-10-12 |
| HM Revenue & Customs | Other | 3 | £188k | 0.0% | 2021-03-22 |
| BROMFORD HOUSING GROUP LIMITED | Other | 1 | £186k | 0.0% | 2020-08-14 |
| Bristol City Council | Other | 1 | £176k | 0.0% | 2015-02-19 |
| The House of Lords | Other | 2 | £176k | 0.0% | 2020-04-03 |
| East Midlands Strategic Commercial Unit (EMSCU) | Other | 1 | £166k | 0.0% | 2018-02-15 |
| Crown Commercial Service | Other | 2 | £143k | 0.0% | 2016-10-11 |
| NHS Arden and Greater East Midlands Commissioning Support Unit | Other | 1 | £135k | 0.0% | 2021-03-05 |
| Gateshead Council | Other | 1 | £133k | 0.0% | 2020-01-24 |
| Brighton and Hove City Council | Other | 1 | £133k | 0.0% | 2022-09-05 |
| Driver and Vehicle Licensing Agency | Other | 3 | £129k | 0.0% | 2021-11-19 |
| Frimley Health NHS Foundation Trust | Other | 1 | £107k | 0.0% | 2022-03-01 |
| Joint Procurement Service for Surrey and Sussex Police | Other | 1 | £101k | 0.0% | 2022-04-26 |
| United Kingdom Atomic Energy Authority | Other | 1 | £100k | 0.0% | 2022-08-15 |
| Home Office | Other | 1 | £83k | 0.0% | 2024-01-16 |
| Worcester City Council | Other | 1 | £74k | 0.0% | 2021-01-22 |
| The Police and Crime Commissioner for Kent | Other | 1 | £65k | 0.0% | 2019-03-26 |
| Royal Borough of Kingston Upon Thames | Other | 1 | £56k | 0.0% | 2017-03-31 |
| Department for Business, Energy & Industrial Strategy | Other | 1 | £56k | 0.0% | 2022-06-29 |
| UK Atomic Energy AuthorityNew | Other | 1 | £50k | 0.0% | 2026-05-08 |
| Valuation Office Agency | Other | 2 | £49k | 0.0% | 2020-03-11 |
| Police, Fire & Crime Commissioner for StaffordshireNew | Other | 2 | £44k | 0.0% | 2026-02-02 |
| Blackburn With Darwen Borough Council | Other | 1 | £33k | 0.0% | 2022-08-19 |
| St Helens Council | Other | 1 | £27k | 0.0% | 2020-11-19 |
| Maritime & Coastguard Agency | Other | 1 | £19k | 0.0% | 2016-04-01 |
| West Yorkshire Combined AuthorityNew | Other | 1 | £19k | 0.0% | 2025-03-23 |
| HS2 | Other | 1 | £16k | 0.0% | 2022-09-05 |
| Leeds City Council | Other | 1 | £13k | 0.0% | 2019-03-29 |
| The National Archives | Other | 1 | £10k | 0.0% | 2021-09-03 |
| Sandwell Metropolitan Borough Council | Other | 4 | £0k | 0.0% | 2019-04-03 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £0k | 0.0% | 2019-12-18 |
| NHS Digital | Other | 1 | £0k | 0.0% | 2017-10-10 |
| HM Land Registry | Other | 1 | £0k | 0.0% | 2016-12-22 |
| Digital Health & Care Wales | Other | 6 | £0k | 0.0% | |
| Moray Council | Other | 1 | £0k | 0.0% | |
| The Common Services Agency (more commonly known as NHS National Services Scotland) (NSS) | Other | 7 | £0k | 0.0% | |
| National Procurement Service (Welsh Government) | Other | 1 | £0k | 0.0% | |
| Scottish Children's Reporter Administration | Other | 1 | £0k | 0.0% | |
| Isle of Anglesey County Council | Other | 1 | £0k | 0.0% | |
| Scottish Government | Other | 2 | £0k | 0.0% | |
| Llywodraeth Cymru / Welsh Government - Commercial Delivery | Other | 4 | £0k | 0.0% | |
| City & County of Swansea | Other | 3 | £0k | 0.0% | |
| The Police and Crime Commissioner for Hertfordshire | Other | 1 | £0k | 0.0% | |
| The Police and Crime Commissioner for Cambridgeshire | Other | 2 | £0k | 0.0% | |
| Gloucestershire County Council | Other | 1 | £0k | 0.0% | |
| Financial Ombudsman Service Limited | Other | 1 | £0k | 0.0% | |
| Welsh Government | Other | 1 | £0k | 0.0% | |
| Senedd Cymru / Welsh Parliament | Other | 1 | £0k | 0.0% | |