| The Association of North East Councils LimitedNew | Other | 2 | £16m | 41.7% | 2025-02-03 |
| Bath and North East Somerset Council | Other | 4 | £4m | 11.7% | 2021-08-04 |
| Hertfordshire County Council | Other | 5 | £4m | 9.8% | 2023-03-17 |
| Doncaster Metropolitan Borough Council | Other | 5 | £1m | 3.5% | 2019-03-07 |
| London Borough of Barking and Dagenham | Other | 2 | £1m | 2.7% | 2020-01-06 |
| Lancashire County CouncilNew | Other | 1 | £912k | 2.4% | 2024-05-30 |
| Wigan Council | Other | 1 | £876k | 2.3% | 2021-09-14 |
| Preston City Council | Other | 5 | £847k | 2.2% | 2026-03-19 |
| London Borough of Redbridge | Other | 4 | £575k | 1.5% | 2020-09-30 |
| Metropolitan Police Service | Other | 2 | £495k | 1.3% | 2021-05-16 |
| Aberdeen City CouncilNew | Other | 2 | £493k | 1.3% | 2025-08-22 |
| Totally Local Company LimitedNew | Other | 3 | £458k | 1.2% | 2026-03-05 |
| Totally Local Company Ltd | Other | 2 | £423k | 1.1% | 2021-03-16 |
| Borough Council of Calderdale | Other | 1 | £397k | 1.0% | 2018-08-02 |
| Orkney Islands Council | Other | 6 | £394k | 1.0% | 2025-11-11 |
| South Ayrshire Council | Other | 2 | £383k | 1.0% | 2023-04-05 |
| Newcastle City Council | Other | 2 | £361k | 0.9% | 2019-04-05 |
| Redcar and Cleveland Borough Council | Other | 1 | £358k | 0.9% | 2020-10-30 |
| Wirral Borough Council | Other | 1 | £330k | 0.9% | 2023-11-15 |
| Neath Port Talbot Council | Other | 1 | £310k | 0.8% | 2019-01-03 |
| Warrington Borough Council | Other | 1 | £298k | 0.8% | 2024-01-03 |
| Braintree District Council | Other | 2 | £294k | 0.8% | 2025-05-02 |
| City of London Corporation | Other | 1 | £282k | 0.7% | 2023-06-13 |
| Conwy County Borough Council | Other | 3 | £272k | 0.7% | 2019-03-01 |
| iXact Limited | Other | 2 | £271k | 0.7% | 2017-07-11 |
| Neath Port Talbot County Borough Council | Other | 4 | £267k | 0.7% | 2023-10-09 |
| Carlisle City Council | Other | 2 | £241k | 0.6% | 2019-03-22 |
| Perth & Kinross Council | Other | 1 | £208k | 0.5% | 2023-03-17 |
| Blackburn With Darwen Borough Council | Other | 1 | £201k | 0.5% | 2021-02-23 |
| Sunderland City Council | Other | 1 | £144k | 0.4% | 2017-02-16 |
| London Borough of Hounslow | Other | 1 | £140k | 0.4% | 2022-03-17 |
| London Borough Of Islington | Other | 1 | £137k | 0.4% | 2019-01-08 |
| East Dunbartonshire Council | Other | 2 | £137k | 0.4% | 2017-12-19 |
| Torfaen County Borough CouncilNew | Other | 1 | £132k | 0.3% | 2025-08-26 |
| ANSA ENVIRONMENTAL SERVICES LIMITED | Other | 1 | £124k | 0.3% | 2020-11-17 |
| THE PROCUREMENT PARTNERSHIP LIMITEDNew | Other | 1 | £120k | 0.3% | 2024-09-13 |
| St Helens CouncilNew | Other | 2 | £116k | 0.3% | 2025-12-19 |
| Brighton and Hove City Council | Other | 1 | £97k | 0.3% | 2020-10-20 |
| Leeds City Council | Other | 1 | £86k | 0.2% | 2022-03-15 |
| Darlington Borough Council | Other | 1 | £83k | 0.2% | 2017-03-14 |
| TAMESIDE METROPOLITAN BOROUGH COUNCILNew | Other | 1 | £81k | 0.2% | 2025-08-11 |
| Tayside Contracts | Other | 1 | £68k | 0.2% | 2022-11-15 |
| Royal Borough of Greenwich | Other | 1 | £61k | 0.2% | 2020-02-23 |
| Gwynedd Council | Other | 1 | £59k | 0.2% | 2018-02-13 |
| North West Leicestershire District Council | Other | 1 | £45k | 0.1% | 2017-04-20 |
| Norfolk County Council | Other | 1 | £40k | 0.1% | 2019-04-15 |
| Harrogate Borough Council | Other | 1 | £33k | 0.1% | 2019-02-26 |