| H M REVENUE & CUSTOMS | Other | 3 | £526m | 52.9% | 2025-12-19 |
| Espo | Other | 1 | £157m | 15.8% | 2019-03-19 |
| Transport for London | Other | 6 | £89m | 9.0% | 2026-04-02 |
| NORTHERN GAS NETWORKS LIMITEDNew | Other | 3 | £66m | 6.7% | 2025-05-02 |
| Crown Commercial Service | Other | 4 | £37m | 3.8% | 2021-03-26 |
| Sellafield LimitedNew | Other | 10 | £29m | 3.0% | 2025-12-19 |
| Derbyshire County Council | Other | 9 | £19m | 1.9% | 2025-09-22 |
| Department for Transport | Other | 6 | £15m | 1.5% | 2019-12-20 |
| City of London Corporation | Other | 2 | £6m | 0.6% | 2024-03-28 |
| Nottinghamshire County CouncilNew | Other | 1 | £6m | 0.6% | 2025-08-04 |
| London Borough of SouthwarkNew | Other | 1 | £6m | 0.6% | 2024-12-24 |
| H M Revenue and Customs | Other | 1 | £5m | 0.5% | 2021-09-30 |
| UNITED UTILITIES WATER LIMITED | Other | 2 | £5m | 0.5% | 2005-12-04 |
| Ministry of Justice | Other | 1 | £4m | 0.4% | 2016-12-01 |
| DfTc - Department for Transport | Other | 16 | £4m | 0.4% | 2022-03-28 |
| Department for Work & Pensions | Other | 7 | £4m | 0.4% | 2025-12-09 |
| DEPARTMENT FOR LEVELLING UP, HOUSING AND COMMUNITIES | Other | 8 | £4m | 0.4% | 2025-03-20 |
| Ministry of Housing, Communities & Local Government | Other | 7 | £2m | 0.2% | 2021-08-23 |
| High Speed Two (HS2) Limited | Other | 1 | £2m | 0.2% | 2016-04-15 |
| City of Bradford Metropolitan District Council | Other | 6 | £1m | 0.1% | 2024-03-21 |
| Salford City Council | Other | 1 | £1m | 0.1% | 2016-03-10 |
| Leeds City Council | Other | 4 | £711k | 0.1% | 2022-04-06 |
| HS2 | Other | 1 | £705k | 0.1% | 2018-06-27 |
| United Kingdom Hydrographic Office | Other | 1 | £497k | 0.1% | 2017-10-31 |
| BANK OF ENGLAND | Other | 4 | £377k | 0.0% | 2024-12-23 |
| Norfolk Constabulary | Other | 3 | £370k | 0.0% | 2021-07-23 |
| Bradford Metropolitan District Council | Other | 1 | £324k | 0.0% | 2020-01-28 |
| Isle of Wight Council | Other | 2 | £307k | 0.0% | 2019-12-10 |
| Sellafield Ltd | Other | 1 | £297k | 0.0% | 2016-11-30 |
| Barnsley Metropolitan Borough Council | Other | 3 | £270k | 0.0% | 2024-02-22 |
| Humankind Charity | Other | 1 | £227k | 0.0% | 2021-07-13 |
| Kent Police | Other | 2 | £221k | 0.0% | 2025-02-13 |
| Big Lottery Fund, operating as The National Lottery Community Fund | Other | 2 | £197k | 0.0% | 2021-11-03 |
| NHS Digital | Other | 1 | £163k | 0.0% | 2018-06-30 |
| Newcastle University | Other | 1 | £159k | 0.0% | 2018-10-22 |
| UK Hydrographic Office | Other | 1 | £147k | 0.0% | 2023-01-01 |
| The Pensions RegulatorNew | Other | 1 | £141k | 0.0% | 2025-03-06 |
| Home Office | Other | 2 | £130k | 0.0% | 2022-08-18 |
| CPSNew | Other | 1 | £127k | 0.0% | 2026-03-16 |
| UK Research and InnovationNew | Other | 1 | £111k | 0.0% | 2026-03-30 |
| University Of The West Of England | Other | 3 | £108k | 0.0% | 2018-03-27 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £99k | 0.0% | 2024-03-29 |
| UK RESEARCH & INNOVATION | Other | 2 | £88k | 0.0% | 2023-05-16 |
| National Savings & Investments | Other | 1 | £80k | 0.0% | 2019-06-05 |
| Newcastle City CouncilNew | Other | 2 | £76k | 0.0% | 2024-12-31 |
| NS&INew | Other | 1 | £67k | 0.0% | 2024-07-01 |
| DRIVER & VEHICLE LICENSING AGENCY | Other | 2 | £60k | 0.0% | 2018-01-08 |
| London Borough of Enfield | Other | 1 | £47k | 0.0% | 2022-12-12 |
| HISTORIC ENGLAND LIMITED | Other | 2 | £25k | 0.0% | 2024-02-27 |
| National Audit Office | Other | 1 | £20k | 0.0% | 2024-03-20 |
| Coventry UniversityNew | Other | 3 | £0k | 0.0% | 2025-10-22 |
| HM Revenue & Customs | Other | 1 | £0k | 0.0% | |
| GENOMICS ENGLAND LIMITED | Other | 1 | £0k | 0.0% | |
| Gloucestershire County Council | Other | 1 | £0k | 0.0% | |
| Glasgow City Council | Other | 1 | £0k | 0.0% | |
| Cardiff Council | Other | 1 | £0k | 0.0% | |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 1 | £0k | 0.0% | |