| HS2 | Other | 4 | £267m | 71.8% | 2021-05-11 |
| Sport EnglandNew | Other | 2 | £45m | 12.1% | 2025-09-24 |
| Hull City CouncilNew | Other | 2 | £15m | 4.0% | 2026-02-04 |
| Supply Hertfordshire | Other | 1 | £8m | 2.1% | 2020-04-23 |
| DfTc - Department for Transport | Other | 20 | £7m | 1.8% | 2026-04-23 |
| East Riding of Yorkshire CouncilNew | Other | 2 | £4m | 1.0% | 2025-01-08 |
| High Speed Two (HS2) Limited | Other | 1 | £3m | 0.8% | 2016-06-03 |
| Espo | Other | 4 | £3m | 0.7% | 2021-08-22 |
| West Midlands Combined Authority | Other | 15 | £2m | 0.6% | 2025-12-09 |
| GREATER MANCHESTER EDUCATION TRUST | Other | 1 | £2m | 0.5% | 2021-03-01 |
| Watford Borough Council | Other | 1 | £2m | 0.5% | 2019-09-10 |
| DERBY CITY COUNCIL | Other | 5 | £2m | 0.4% | 2025-06-23 |
| Department for Transport | Other | 9 | £1m | 0.4% | 2026-04-08 |
| Sunderland City Council | Other | 9 | £1m | 0.3% | 2024-06-18 |
| Oxfordshire County Council | Other | 3 | £870k | 0.2% | 2025-03-19 |
| DEPARTMENT FOR LEVELLING UP, HOUSING AND COMMUNITIES | Other | 1 | £778k | 0.2% | 2024-02-01 |
| Nottingham City Council | Other | 6 | £722k | 0.2% | 2022-08-31 |
| West Yorkshire Combined Authority | Other | 6 | £488k | 0.1% | 2024-05-24 |
| Notting Hill Genesis | Other | 2 | £458k | 0.1% | 2022-06-09 |
| Tees Valley Combined Authority | Other | 2 | £446k | 0.1% | 2023-10-22 |
| Transport for Greater Manchester | Other | 1 | £390k | 0.1% | 2018-03-04 |
| National HighwaysNew | Other | 1 | £349k | 0.1% | 2025-03-12 |
| Isle of Wight Council | Other | 3 | £344k | 0.1% | 2025-03-17 |
| RAIL SAFETY AND STANDARDS BOARD LIMITEDNew | Other | 3 | £317k | 0.1% | 2025-10-31 |
| Nottinghamshire County Council | Other | 3 | £277k | 0.1% | 2025-10-29 |
| Crown Commercial Service | Other | 5 | £273k | 0.1% | 2018-03-28 |
| Department for Work & PensionsNew | Other | 1 | £269k | 0.1% | 2025-12-01 |
| Transport for London | Other | 2 | £248k | 0.1% | 2025-08-30 |
| Connected Places Catapult | Other | 1 | £242k | 0.1% | 2022-05-30 |
| Wigan Council | Other | 2 | £240k | 0.1% | 2025-01-21 |
| Office of Rail and Road | Other | 7 | £216k | 0.1% | 2025-02-14 |
| Bradford Metropolitan District Council | Other | 3 | £212k | 0.1% | 2021-02-09 |
| Kirklees Council | Other | 3 | £207k | 0.1% | 2023-09-01 |
| Staffordshire County CouncilNew | Other | 2 | £192k | 0.1% | 2026-03-02 |
| Leicester City Council | Other | 1 | £170k | 0.0% | 2020-02-10 |
| Mid Sussex District Council | Other | 1 | £160k | 0.0% | 2024-05-01 |
| Durham County Council | Other | 1 | £154k | 0.0% | 2018-08-13 |
| Rochford District Council | Other | 2 | £152k | 0.0% | 2023-05-30 |
| Liverpool City Region Combined Authority | Other | 2 | £150k | 0.0% | 2024-04-15 |
| Lincolnshire County CouncilNew | Other | 1 | £130k | 0.0% | 2025-05-14 |
| South Yorkshire Mayoral Combined Authority GroupNew | Other | 2 | £125k | 0.0% | 2024-12-04 |
| Sheffield City CouncilNew | Other | 1 | £120k | 0.0% | 2025-01-21 |
| Essex County CouncilNew | Other | 2 | £119k | 0.0% | 2025-11-24 |
| UNIVERSITY OF SUSSEX(THE) | Other | 1 | £112k | 0.0% | 2024-04-30 |
| Gloucestershire County Council | Other | 2 | £112k | 0.0% | 2017-11-14 |
| Worcester City Council | Other | 1 | £95k | 0.0% | 2021-02-24 |
| City of Doncaster Council | Other | 3 | £94k | 0.0% | 2024-03-26 |
| Stockton Borough Council | Other | 1 | £85k | 0.0% | 2021-11-08 |
| Sheffield City Region Mayoral Combined Authority Group | Other | 1 | £84k | 0.0% | 2021-04-12 |
| Castle Point Borough Council | Other | 1 | £83k | 0.0% | 2024-01-25 |
| Buckinghamshire Council | Other | 1 | £80k | 0.0% | 2024-02-20 |
| London Borough of Hounslow | Other | 1 | £75k | 0.0% | 2017-05-26 |
| Epping Forest District Council | Other | 1 | £72k | 0.0% | 2017-09-10 |
| Newcastle City Council | Other | 1 | £60k | 0.0% | 2019-02-25 |
| Hampshire County Council | Other | 5 | £50k | 0.0% | 2026-03-24 |
| North East Lincolnshire Council | Other | 2 | £50k | 0.0% | 2017-03-21 |
| EU SUPPLY LIMITED | Other | 1 | £49k | 0.0% | 2024-04-25 |
| City of Bradford Metropolitan District Council | Other | 1 | £49k | 0.0% | 2021-12-28 |
| Office for Environmental Protection | Other | 1 | £46k | 0.0% | 2022-02-11 |
| City of London Corporation | Other | 1 | £46k | 0.0% | 2022-10-01 |
| DEFRA | Other | 1 | £45k | 0.0% | 2021-05-21 |
| Bedford Borough Council | Other | 1 | £43k | 0.0% | 2022-03-04 |
| Folkestone and Hythe District Council | Other | 1 | £40k | 0.0% | 2022-02-10 |
| City of York Council | Other | 1 | £40k | 0.0% | 2022-10-20 |
| capitalEsourcing | Other | 1 | £35k | 0.0% | 2022-10-13 |
| SUSTRANS LIMITED | Other | 1 | £35k | 0.0% | 2022-07-11 |
| Ashfield District Council | Other | 1 | £34k | 0.0% | 2021-07-29 |
| London Borough of Enfield | Other | 1 | £33k | 0.0% | 2022-04-27 |
| Erewash Borough Council | Other | 1 | £31k | 0.0% | 2022-10-31 |
| Merseytravel | Other | 1 | £30k | 0.0% | 2021-05-13 |
| Lancaster City Council | Other | 1 | £29k | 0.0% | 2022-03-16 |
| Rotherham Metropolitan Borough CouncilNew | Other | 1 | £28k | 0.0% | 2025-05-18 |
| West Northamptonshire CouncilNew | Other | 2 | £26k | 0.0% | 2025-05-12 |
| SATELLITE APPLICATIONS CATAPULT | Other | 4 | £26k | 0.0% | 2023-03-13 |
| Homes England (the name adopted by the Homes and Communities Agency) | Other | 1 | £25k | 0.0% | 2020-09-12 |
| North Lincolnshire Council | Other | 1 | £24k | 0.0% | 2023-08-04 |
| Blackburn With Darwen Borough Council | Other | 2 | £23k | 0.0% | 2021-06-21 |
| Bristol City Council | Other | 1 | £20k | 0.0% | 2018-03-30 |
| L&Q Construction | Other | 1 | £19k | 0.0% | 2020-03-31 |
| Vale of White Horse District Council | Other | 1 | £18k | 0.0% | 2017-06-05 |
| Darlington Borough Council | Other | 1 | £11k | 0.0% | 2021-11-27 |
| Northamptonshire County Council | Other | 1 | £7k | 0.0% | 2018-01-04 |
| York and North Yorkshire Combined AuthorityNew | Other | 2 | £0k | 0.0% | 2026-04-24 |
| TranslinkNew | Other | 1 | £0k | 0.0% | 2026-03-26 |
| Dover Harbour BoardNew | Other | 6 | £0k | 0.0% | 2025-12-18 |
| Leicestershire County Council, trading as ESPONew | Other | 2 | £0k | 0.0% | 2025-12-04 |
| Breckland District CouncilNew | Other | 1 | £0k | 0.0% | 2024-06-28 |
| Hertfordshire County Council - Environment | Other | 1 | £0k | 0.0% | 2023-08-17 |
| Central Bedfordshire Council | Other | 1 | £0k | 0.0% | 2020-12-19 |
| The Association of North East Councils Limited | Other | 1 | £0k | 0.0% | 2017-09-19 |
| Ofgem | Other | 1 | £0k | 0.0% | 2015-08-26 |
| National Highways Limited | Other | 1 | £0k | 0.0% | |
| Procurement Services - Lifecycle on behalf of COMMERCIAL SERVICES KENT LIMITED | Other | 1 | £0k | 0.0% | |
| Dumfries and Galloway Council | Other | 1 | £0k | 0.0% | |
| Medway Council | Other | 3 | £0k | 0.0% | |
| Rail Safety and Standards Board | Other | 1 | £0k | 0.0% | |
| London Borough of Sutton | Other | 1 | £0k | 0.0% | |
| Welsh Government - Commercial Delivery | Other | 1 | £0k | 0.0% | |
| Energy Saving Trust Ltd | Other | 2 | £0k | 0.0% | |
| Strathclyde Partnership for Transport | Other | 12 | £0k | 0.0% | |
| Transport for Wales | Other | 1 | £0k | 0.0% | |
| Transport Scotland | Other | 2 | £0k | 0.0% | |
| THAMES WATER UTILITIES LIMITED | Other | 1 | £0k | 0.0% | |
| SOUTH WEST SMART APPLICATIONS LIMITED | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 2 | £0k | 0.0% | |
| Gedling Borough Council | Other | 1 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 3 | £0k | 0.0% | |
| Network Rail Infrastructure Ltd | Other | 1 | £0k | 0.0% | |