| Global Commercial Services Group LtdNew | Other | 4 | £230m | 67.1% | 2025-11-27 |
| Bath and North East Somerset Council | Other | 6 | £31m | 9.0% | 2021-08-04 |
| Yorkshire Purchasing Organisation | Other | 1 | £8m | 2.2% | 2023-09-12 |
| Espo | Other | 6 | £7m | 2.0% | 2020-11-30 |
| YPO | Other | 2 | £6m | 1.7% | 2019-09-19 |
| Leeds City Council | Other | 5 | £5m | 1.5% | 2024-11-13 |
| Wakefield Council Customer Service | Other | 1 | £5m | 1.5% | 2018-07-18 |
| Hertfordshire County Council | Other | 12 | £4m | 1.1% | 2026-02-03 |
| North Yorkshire County Council | Other | 3 | £3m | 1.0% | 2025-09-19 |
| London Borough of Hounslow | Other | 2 | £3m | 0.9% | 2023-10-04 |
| London Borough of Lewisham | Other | 1 | £3m | 0.9% | 2019-09-26 |
| Coventry City Council | Other | 3 | £3m | 0.9% | 2025-06-17 |
| Leicestershire County Council | Other | 1 | £3m | 0.8% | 2023-06-22 |
| Leicester City Council | Other | 5 | £2m | 0.7% | 2022-03-18 |
| LONDON BOROUGH OF HAVERING | Other | 3 | £2m | 0.7% | 2024-10-24 |
| Sheffield City Council | Other | 4 | £2m | 0.6% | 2023-09-18 |
| West Sussex County Council | Other | 2 | £2m | 0.6% | 2020-02-18 |
| Sefton CouncilNew | Other | 1 | £2m | 0.6% | 2024-07-16 |
| Central Bedfordshire CouncilNew | Other | 7 | £2m | 0.5% | 2025-09-04 |
| Derbyshire County Council | Other | 1 | £2m | 0.5% | 2017-04-28 |
| Stockton on Tees Borough Council | Other | 2 | £2m | 0.5% | 2021-12-07 |
| Bradford Metropolitan District Council | Other | 2 | £2m | 0.5% | 2019-08-28 |
| East Riding of Yorkshire | Other | 3 | £2m | 0.5% | 2021-07-20 |
| Oxfordshire County Council | Other | 1 | £2m | 0.5% | 2016-04-18 |
| London Borough of Barnet | Other | 1 | £2m | 0.5% | 2021-08-17 |
| Lancashire County Council | Other | 2 | £1m | 0.4% | 2016-06-01 |
| Liverpool City Region Combined AuthorityNew | Other | 1 | £1m | 0.3% | 2026-03-16 |
| London Borough of Merton | Other | 3 | £1m | 0.3% | 2020-12-16 |
| Redcar and Cleveland Borough Council | Other | 5 | £916k | 0.3% | 2024-09-16 |
| Kirklees Metropolitan Council | Other | 3 | £826k | 0.2% | 2025-01-07 |
| St Helens CouncilNew | Other | 1 | £647k | 0.2% | 2025-09-25 |
| South Gloucestershire Council | Other | 1 | £609k | 0.2% | 2019-06-21 |
| Aberdeen City Council | Other | 1 | £593k | 0.2% | 2022-05-09 |
| Wigan Council | Other | 1 | £584k | 0.2% | 2019-05-21 |
| North East Lincolnshire Council | Other | 1 | £400k | 0.1% | 2018-07-16 |
| Blackpool CouncilNew | Other | 1 | £319k | 0.1% | 2024-09-20 |
| Neath Port Talbot County Borough Council | Other | 3 | £284k | 0.1% | 2025-01-10 |
| Liverpool City Council | Other | 1 | £234k | 0.1% | 2018-09-27 |
| Newcastle City CouncilNew | Other | 1 | £223k | 0.1% | 2025-06-26 |
| Slough Borough Council | Other | 1 | £216k | 0.1% | 2019-01-28 |
| Caerphilly County Borough CouncilNew | Other | 1 | £214k | 0.1% | 2025-12-22 |
| Perth & Kinross CouncilNew | Other | 1 | £171k | 0.0% | 2025-06-18 |
| Harlow District Council | Other | 2 | £141k | 0.0% | 2021-12-16 |
| Elmbridge Borough Council | Other | 2 | £129k | 0.0% | 2019-09-26 |
| Conwy County Borough Council | Other | 1 | £108k | 0.0% | 2019-03-01 |
| SE Shared Services | Other | 1 | £63k | 0.0% | 2017-12-19 |
| Essex County Council | Other | 1 | £60k | 0.0% | 2020-03-16 |
| Pembrokeshire County Council | Other | 1 | £59k | 0.0% | 2021-10-21 |
| London Borough of Hackney | Other | 1 | £20k | 0.0% | 2021-03-01 |
| Wolverhampton City Council | Other | 1 | £0k | 0.0% | 2022-01-14 |
| Leeds City Council - PACS | Other | 1 | £0k | 0.0% | |
| East Ayrshire Council | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 1 | £0k | 0.0% | |
| East Riding of Yorkshire Council | Other | 1 | £0k | 0.0% | |