| National Highways Limited | Other | 12 | £27m | 14.2% | 2026-03-30 |
| Met Office | Other | 25 | £21m | 11.1% | 2026-04-03 |
| Department for Environment Food & Rural Affairs | Other | 3 | £21m | 11.0% | 2026-03-27 |
| National Highways | Other | 4 | £13m | 7.1% | 2025-04-07 |
| DEFRA | Other | 9 | £11m | 6.0% | 2022-09-12 |
| UK Hydrographic Office | Other | 5 | £9m | 4.9% | 2023-12-13 |
| Environment Agency | Other | 1 | £8m | 4.4% | 2023-06-01 |
| Crown Commercial Service | Other | 4 | £8m | 4.3% | 2025-05-20 |
| Oxfordshire County Council | Other | 1 | £7m | 3.7% | 2017-07-19 |
| H M REVENUE & CUSTOMSNew | Other | 1 | £5m | 2.9% | 2024-06-28 |
| UNITED UTILITIES WATER LIMITEDNew | Other | 2 | £5m | 2.8% | 2025-12-19 |
| HM Revenue & Customs | Other | 1 | £4m | 2.1% | 2021-07-07 |
| Forestry Commission | Other | 1 | £3m | 1.7% | 2024-04-01 |
| Homes England (the name adopted by the Homes and Communities Agency) | Other | 5 | £3m | 1.3% | 2025-04-25 |
| United Kingdom Hydrographic Office | Other | 12 | £2m | 1.2% | 2018-12-21 |
| NDANew | Other | 1 | £2m | 1.1% | 2026-05-01 |
| Hampshire County Council | Other | 3 | £2m | 1.0% | 2026-01-28 |
| Office for National Statistics | Other | 4 | £2m | 0.9% | 2025-03-26 |
| UK Research and InnovationNew | Other | 2 | £2m | 0.9% | 2026-04-30 |
| East West RailNew | Other | 1 | £2m | 0.9% | 2026-02-06 |
| Cornwall Council | Other | 1 | £2m | 0.8% | |
| UK Health Security AgencyNew | Other | 2 | £1m | 0.7% | 2025-08-28 |
| Public Health England | Other | 3 | £1m | 0.6% | 2021-07-27 |
| Sheffield City Council | Other | 4 | £1m | 0.6% | 2025-02-14 |
| NUCLEAR DECOMMISSIONING AUTHORITY | Other | 5 | £1m | 0.6% | 2024-03-25 |
| Lancashire County Council | Other | 2 | £1m | 0.5% | 2025-03-26 |
| GREAT BRITISH ENERGY - NUCLEARNew | Other | 2 | £947k | 0.5% | 2025-08-01 |
| East Riding of Yorkshire Council | Other | 9 | £869k | 0.5% | 2025-08-20 |
| Durham County Council | Other | 3 | £838k | 0.4% | 2022-03-15 |
| Bristol City Council | Other | 3 | £781k | 0.4% | 2023-02-03 |
| HISTORIC ENGLAND LIMITED | Other | 2 | £753k | 0.4% | 2025-02-10 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 3 | £701k | 0.4% | 2024-04-17 |
| London Borough of Merton | Other | 1 | £565k | 0.3% | 2020-03-11 |
| Department for Transport | Other | 5 | £541k | 0.3% | 2020-09-01 |
| UK RESEARCH & INNOVATION | Other | 1 | £511k | 0.3% | 2023-07-17 |
| Shropshire Council | Other | 2 | £490k | 0.3% | 2020-02-11 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 5 | £473k | 0.3% | 2026-03-12 |
| Norfolk County CouncilNew | Other | 2 | £472k | 0.3% | 2026-03-31 |
| DVSA - Driver and Vehicle Standards Agency | Other | 3 | £464k | 0.2% | 2026-03-01 |
| South West Police Procurement Service | Other | 2 | £440k | 0.2% | 2023-12-12 |
| Hertfordshire County Council | Other | 1 | £437k | 0.2% | 2023-11-15 |
| Sport England | Other | 2 | £436k | 0.2% | 2023-06-22 |
| HM Land Registry | Other | 7 | £418k | 0.2% | 2024-08-21 |
| Natural England | Other | 1 | £400k | 0.2% | 2023-02-17 |
| Isle of Wight Council | Other | 5 | £393k | 0.2% | 2022-12-29 |
| City of Doncaster Council | Other | 3 | £379k | 0.2% | 2023-11-10 |
| EAST WEST RAILWAY COMPANY LIMITED | Other | 2 | £379k | 0.2% | 2021-11-12 |
| Basingstoke and Deane Borough Council | Other | 2 | £366k | 0.2% | 2026-03-31 |
| Southend-on-sea Borough Council | Other | 2 | £354k | 0.2% | 2024-09-09 |
| Kent County Council | Other | 2 | £350k | 0.2% | 2024-11-21 |
| London Borough of Barking and Dagenham | Other | 1 | £348k | 0.2% | 2021-03-09 |
| Cabinet Office | Other | 2 | £339k | 0.2% | 2019-11-12 |
| Department for Education | Other | 3 | £339k | 0.2% | 2023-08-22 |
| Thames Valley Police | Other | 1 | £328k | 0.2% | 2021-07-01 |
| Devon County CouncilNew | Other | 1 | £315k | 0.2% | 2025-03-19 |
| Leeds City Council | Other | 3 | £312k | 0.2% | 2022-01-28 |
| Radioactive Waste Management Limited | Other | 7 | £310k | 0.2% | 2021-02-01 |
| North Northamptonshire Council | Other | 2 | £307k | 0.2% | 2025-04-09 |
| Manchester University NHS Foundation Trust | Other | 1 | £304k | 0.2% | 2024-01-15 |
| City of Bradford Metropolitan District Council | Other | 2 | £278k | 0.1% | 2023-10-09 |
| Durham Constabulary | Other | 1 | £277k | 0.1% | 2016-10-16 |
| Nottingham City Council | Other | 2 | £266k | 0.1% | 2023-10-24 |
| West Yorkshire Combined Authority | Other | 2 | £262k | 0.1% | 2024-07-23 |
| ORDNANCE SURVEY LIMITEDNew | Other | 1 | £253k | 0.1% | 2026-03-31 |
| London Borough of Hammersmith & FulhamNew | Other | 1 | £248k | 0.1% | 2026-05-12 |
| Peterborough City Council | Other | 1 | £214k | 0.1% | 2021-07-27 |
| The Mayor and Commonalty and Citizens of the City of LondonNew | Other | 1 | £213k | 0.1% | 2026-04-06 |
| TRANSPORT SCOTLAND LIMITED | Other | 2 | £208k | 0.1% | 2020-09-16 |
| Home Office | Other | 5 | £206k | 0.1% | 2025-04-01 |
| Norfolk ConstabularyNew | Other | 1 | £201k | 0.1% | 2024-05-30 |
| Transport for London | Other | 1 | £199k | 0.1% | 2016-09-19 |
| The Crown Estate | Other | 2 | £199k | 0.1% | 2025-03-28 |
| Bradford Metropolitan District Council | Other | 1 | £195k | 0.1% | 2020-09-30 |
| Thanet District Council | Other | 2 | £185k | 0.1% | 2019-11-21 |
| Canterbury City Council | Other | 2 | £181k | 0.1% | 2022-11-30 |
| Salford City CouncilNew | Other | 1 | £174k | 0.1% | 2025-03-31 |
| London Borough of Sutton | Other | 1 | £170k | 0.1% | 2018-06-27 |
| Bedford Borough Council | Other | 2 | £154k | 0.1% | 2022-03-18 |
| Competition and Markets Authority | Other | 3 | £142k | 0.1% | 2025-08-20 |
| Surrey County Council | Other | 2 | £139k | 0.1% | 2025-05-28 |
| Lancaster City Council | Other | 2 | £135k | 0.1% | 2024-06-27 |
| Oxford City Council | Other | 1 | £132k | 0.1% | 2023-02-17 |
| Chelmsford City Council | Other | 1 | £128k | 0.1% | 2023-10-02 |
| Ofgem | Other | 2 | £126k | 0.1% | 2026-02-25 |
| Royal Borough of Kingston Upon Thames | Other | 2 | £125k | 0.1% | 2022-09-01 |
| Lee Valley Regional Park Authority | Other | 1 | £120k | 0.1% | 2020-10-19 |
| West Lancashire Borough Council | Other | 3 | £117k | 0.1% | 2026-01-01 |
| West Berkshire Council | Other | 1 | £114k | 0.1% | 2024-03-22 |
| Wealden District CouncilNew | Other | 1 | £114k | 0.1% | 2025-08-18 |
| DfTc - Department for Transport | Other | 3 | £109k | 0.1% | 2024-02-22 |
| Redcar and Cleveland Borough Council | Other | 2 | £108k | 0.1% | 2020-11-16 |
| West Sussex County Council | Other | 1 | £107k | 0.1% | 2022-08-15 |
| Humberside Fire & Rescue ServiceNew | Other | 1 | £102k | 0.1% | 2025-04-28 |
| Buckinghamshire Council | Other | 1 | £101k | 0.1% | 2019-07-08 |
| Suffolk Constabulary | Other | 1 | £100k | 0.1% | 2017-04-20 |
| Thirteen Housing Group Limited | Other | 2 | £93k | 0.0% | 2023-10-06 |
| Dover District Council | Other | 1 | £92k | 0.0% | 2019-11-14 |
| Dartford Borough CouncilNew | Other | 1 | £91k | 0.0% | 2026-02-18 |
| ANIMAL AND PLANT HEALTH AGENCY | Other | 1 | £89k | 0.0% | 2023-02-01 |
| The District Council of Folkestone and HytheNew | Other | 1 | £89k | 0.0% | 2026-03-20 |
| Fenland District CouncilNew | Other | 1 | £88k | 0.0% | 2025-11-09 |
| Crawley Borough Council | Other | 1 | £81k | 0.0% | 2024-03-06 |
| Suffolk County Council | Other | 2 | £80k | 0.0% | 2026-03-16 |
| TOGETHER HOUSING GROUP LIMITED | Other | 1 | £79k | 0.0% | 2024-02-05 |
| Hereford & Worcester Fire and Rescue Service | Other | 1 | £79k | 0.0% | 2022-01-31 |
| Darlington Borough Council | Other | 1 | £75k | 0.0% | 2017-08-22 |
| Esri (UK) LtdNew | Other | 1 | £74k | 0.0% | 2025-07-02 |
| Department for Business, Energy & Industrial Strategy | Other | 1 | £70k | 0.0% | 2023-03-31 |
| HER MAJESTYS LAND REGISTRY | Other | 1 | £70k | 0.0% | 2017-09-28 |
| ICS on behalf of DSIT and DESNZNew | Other | 2 | £70k | 0.0% | 2026-02-05 |
| Lichfield District Council | Other | 2 | £68k | 0.0% | 2021-11-03 |
| GREENSQUAREACCORD LIMITEDNew | Other | 2 | £67k | 0.0% | 2026-02-26 |
| East Sussex County Council | Other | 2 | £66k | 0.0% | 2025-11-25 |
| Brighton and Hove City Council | Other | 1 | £62k | 0.0% | 2017-04-05 |
| Ministry of Housing, Communities & Local Government | Other | 2 | £62k | 0.0% | 2021-07-15 |
| Doncaster MBC | Other | 1 | £62k | 0.0% | 2019-10-29 |
| MCA - Maritime and Coastguard Agency | Other | 4 | £58k | 0.0% | 2024-03-28 |
| Nottinghamshire County Council | Other | 1 | £50k | 0.0% | 2023-09-20 |
| Ministry of Defence, Agencies/Misc, Other | Other | 1 | £49k | 0.0% | 2018-10-31 |
| London Borough Of IslingtonNew | Other | 1 | £47k | 0.0% | 2024-07-09 |
| South Tyneside CouncilNew | Other | 1 | £46k | 0.0% | 2025-12-01 |
| mhs homes groupNew | Other | 1 | £44k | 0.0% | 2025-11-11 |
| Kirklees CouncilNew | Other | 1 | £42k | 0.0% | 2026-01-31 |
| SERIOUS FRAUD OFFICE | Other | 1 | £40k | 0.0% | 2021-01-27 |
| Sunderland City Council | Other | 1 | £39k | 0.0% | 2018-07-02 |
| Nuclear Restoration Services Limited (Dounreay) | Other | 1 | £38k | 0.0% | 2024-03-28 |
| Department for Science, Innovation & TechnologyNew | Other | 1 | £37k | 0.0% | 2025-10-29 |
| Newcastle City Council | Other | 3 | £36k | 0.0% | 2024-03-20 |
| Dounreay a division of Magnox Limited | Other | 1 | £35k | 0.0% | 2023-03-31 |
| CTM Portal for the NDA Shared Services Alliance | Other | 1 | £32k | 0.0% | 2022-04-06 |
| HS2 | Other | 1 | £30k | 0.0% | 2022-01-20 |
| Uttlesford District CouncilNew | Other | 1 | £30k | 0.0% | 2025-01-28 |
| Humberside Fire and Rescue Service | Other | 1 | £29k | 0.0% | 2024-04-12 |
| Folkestone and Hythe District CouncilNew | Other | 1 | £26k | 0.0% | 2025-03-18 |
| Tonbridge and Malling Borough Council | Other | 1 | £25k | 0.0% | 2017-08-25 |
| NE | Other | 1 | £20k | 0.0% | 2022-03-01 |
| Police and Crime Commissioner for LincolnshireNew | Other | 1 | £16k | 0.0% | 2024-10-25 |
| Maritime and Coastguard Agency | Other | 3 | £16k | 0.0% | |
| High Speed Two (HS2) Limited | Other | 1 | £15k | 0.0% | 2016-11-29 |
| Midlands & Lancashire C S U | Other | 1 | £12k | 0.0% | 2024-01-19 |
| West Midlands Combined Authority | Other | 1 | £11k | 0.0% | 2018-02-27 |
| Hereford & Worcester FireNew | Other | 1 | £0k | 0.0% | 2025-03-17 |
| London Borough of Bexley | Other | 1 | £0k | 0.0% | |
| Historic England | Other | 1 | £0k | 0.0% | |
| LONDON BOROUGH OF HAVERING | Other | 1 | £0k | 0.0% | |
| National Records of Scotland | Other | 1 | £0k | 0.0% | |
| NORTHERN GAS NETWORKS LIMITED | Other | 7 | £0k | 0.0% | |
| London Borough of Hammersmith and Fuham | Other | 1 | £0k | 0.0% | |
| Renfrewshire Council | Other | 2 | £0k | 0.0% | |
| Replacement Geographical Information System (GIS) Mapping Software | Other | 1 | £0k | 0.0% | |
| Transport Scotland | Other | 1 | £0k | 0.0% | |
| UK Research & Innovation | Other | 1 | £0k | 0.0% | |
| South Ayrshire Council | Other | 1 | £0k | 0.0% | |
| Scottish Government | Other | 1 | £0k | 0.0% | |
| Health and Safety Executive | Other | 2 | £0k | 0.0% | |
| Wolverhampton City Council | Other | 1 | £0k | 0.0% | |
| Forestry and Land Scotland | Other | 1 | £0k | 0.0% | |
| Police and Crime Commissioner for Cheshire | Other | 1 | £0k | 0.0% | |
| Nuclear Restoration Services Limited | Other | 1 | £0k | 0.0% | |
| SCOTIA GAS NETWORKS LIMITED | Other | 1 | £0k | 0.0% | |