| Transport for London | Other | 6 | £185m | 24.5% | 2025-12-23 |
| Surrey County Council | Other | 1 | £97m | 12.8% | 2023-01-17 |
| Ministry of Justice | Other | 5 | £96m | 12.7% | 2020-01-24 |
| Manchester City Council | Other | 10 | £72m | 9.5% | 2025-10-15 |
| London Borough of Brent | Other | 2 | £45m | 5.9% | 2023-01-19 |
| Brighton and Hove City Council | Other | 5 | £32m | 4.2% | 2023-12-19 |
| Hertfordshire County Council - Environment | Other | 1 | £24m | 3.2% | 2024-04-17 |
| London Borough of EnfieldNew | Other | 2 | £22m | 2.9% | 2026-04-22 |
| Warwickshire County Council | Other | 2 | £19m | 2.5% | 2021-09-10 |
| Durham County Council | Other | 2 | £18m | 2.4% | 2021-06-29 |
| National Highways | Other | 13 | £16m | 2.1% | 2022-09-13 |
| Trafford Council | Other | 1 | £16m | 2.1% | 2024-02-28 |
| Salford City Council | Other | 2 | £13m | 1.7% | 2024-03-20 |
| Yorkshire Purchasing Organisation | Other | 6 | £11m | 1.4% | 2023-09-20 |
| National Highways LimitedNew | Other | 2 | £10m | 1.3% | 2025-12-09 |
| Birmingham City Council | Other | 1 | £9m | 1.2% | 2024-01-18 |
| Swindon Borough Council | Other | 1 | £8m | 1.1% | 2020-03-19 |
| Torbay Council | Other | 2 | £8m | 1.1% | 2019-10-01 |
| Derbyshire County Council | Other | 2 | £6m | 0.8% | 2022-04-01 |
| London Borough of Wandsworth | Other | 2 | £6m | 0.8% | 2021-06-28 |
| London Borough of Hackney | Other | 2 | £5m | 0.7% | 2024-06-03 |
| Wolverhampton City Council | Other | 2 | £5m | 0.6% | 2020-12-02 |
| Folkestone and Hythe District Council | Other | 2 | £4m | 0.5% | 2023-11-29 |
| Gloucestershire County Council | Other | 3 | £3m | 0.3% | 2021-10-11 |
| Places for People Group Ltd | Other | 1 | £3m | 0.3% | 2020-03-31 |
| Bracknell Forest Borough Council | Other | 1 | £2m | 0.3% | 2020-06-09 |
| SE Shared Services | Other | 1 | £2m | 0.3% | 2019-10-02 |
| Bath and North East Somerset CouncilNew | Other | 1 | £2m | 0.3% | 2024-06-25 |
| Kent County Council | Other | 2 | £2m | 0.3% | 2024-01-15 |
| Epping Forest District Council | Other | 2 | £2m | 0.2% | 2024-03-31 |
| Nottinghamshire County Council | Other | 1 | £2m | 0.2% | 2020-01-31 |
| Department for Work & Pensions | Other | 2 | £2m | 0.2% | 2025-01-07 |
| Buckinghamshire Council | Other | 2 | £1m | 0.2% | 2023-01-06 |
| oneSource | Other | 1 | £1m | 0.2% | 2020-12-22 |
| Nottingham City CouncilNew | Other | 2 | £1m | 0.2% | 2025-10-28 |
| Middlesbrough Council | Other | 1 | £1m | 0.2% | 2022-02-02 |
| Oxfordshire County Council | Other | 1 | £1m | 0.2% | 2024-04-02 |
| Lancashire County CouncilNew | Other | 1 | £1m | 0.1% | 2025-01-08 |
| South Tyneside Council | Other | 2 | £1m | 0.1% | 2018-06-26 |
| East Sussex County Council | Other | 2 | £800k | 0.1% | 2023-11-30 |
| Southampton City CouncilNew | Other | 1 | £570k | 0.1% | 2025-02-01 |
| Coventry City Council | Other | 1 | £500k | 0.1% | 2023-04-28 |
| Places for People Group Limited | Other | 1 | £500k | 0.1% | 2021-11-05 |
| City of Bradford Metropolitan District Council | Other | 2 | £448k | 0.1% | 2023-03-13 |
| Peterborough City Council | Other | 1 | £365k | 0.0% | 2023-10-01 |
| Southend-on-Sea City CouncilNew | Other | 1 | £280k | 0.0% | 2025-11-11 |
| Melton Borough CouncilNew | Other | 1 | £267k | 0.0% | 2025-02-20 |
| North Lincolnshire Council | Other | 1 | £257k | 0.0% | 2019-07-23 |
| Sheffield City Council | Other | 4 | £184k | 0.0% | 2023-02-08 |
| South Kesteven District Council | Other | 1 | £147k | 0.0% | 2024-03-18 |
| North East Lincolnshire Council | Other | 1 | £135k | 0.0% | 2022-02-09 |
| Leicester City Council | Other | 2 | £132k | 0.0% | 2023-11-24 |
| Mid Sussex District CouncilNew | Other | 1 | £100k | 0.0% | 2024-06-07 |
| Hull City Council | Other | 1 | £50k | 0.0% | 2023-11-24 |
| Gedling Borough Council | Other | 1 | £49k | 0.0% | 2022-11-14 |
| Oldham Metropolitan Borough Council | Other | 1 | £35k | 0.0% | |
| Warrington Borough Council | Other | 1 | £23k | 0.0% | 2016-09-11 |
| Wiltshire Council | Other | 1 | £8k | 0.0% | 2019-11-12 |
| The Mayor and Commonalty and Citizens of the City of LondonNew | Other | 2 | £0k | 0.0% | 2025-09-17 |
| Walsall Council e-Tendering | Other | 1 | £0k | 0.0% | 2021-08-25 |
| CROYDON COUNCIL | Other | 2 | £0k | 0.0% | 2020-03-03 |
| Sunderland City Council | Other | 1 | £0k | 0.0% | 2017-03-07 |
| Cornwall Council | Other | 2 | £0k | 0.0% | 2017-01-27 |
| Shepway District Council | Other | 1 | £0k | 0.0% | 2015-11-02 |
| Wealden District Council | Other | 1 | £0k | 0.0% | |
| Royal Borough of Kensington & Chelsea | Other | 1 | £0k | 0.0% | |
| Forestry and Land Scotland | Other | 1 | £0k | 0.0% | |
| Orkney Islands Council | Other | 1 | £0k | 0.0% | |
| YPO | Other | 1 | £0k | 0.0% | |
| Mid Ulster District Council | Other | 1 | £0k | 0.0% | |
| Leeds City Council | Other | 2 | £0k | 0.0% | |
| East Riding of Yorkshire Council | Other | 1 | £0k | 0.0% | |
| Espo | Other | 1 | £0k | 0.0% | |
| SEVERN TRENT WATER LIMITED | Other | 1 | £0k | 0.0% | |
| Westminster City Council | Other | 3 | £0k | 0.0% | |
| RBKC | Other | 1 | £0k | 0.0% | |
| London Borough of Lewisham | Other | 1 | £0k | 0.0% | |
| Leicestershire County Council | Other | 1 | £0k | 0.0% | |
| Solihull Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Bradford Metropolitan District Council | Other | 1 | £0k | 0.0% | |
| London Borough of Camden | Other | 1 | £0k | 0.0% | |
| DUDLEY MBC | Other | 1 | £0k | 0.0% | |
| Norwich City Council | Other | 1 | £0k | 0.0% | |
| Barnsley Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Bury Council | Other | 1 | £0k | 0.0% | |
| Walsall Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 1 | £0k | 0.0% | |
| West Berkshire Council | Other | 1 | £0k | 0.0% | |
| London Borough of Richmond Upon Thames | Other | 1 | £0k | 0.0% | |