| Lincolnshire County Council | Other | 2 | £90m | 21.8% | 2023-12-22 |
| Suffolk County Council | Other | 2 | £53m | 12.8% | 2023-10-31 |
| Somerset County Council | Other | 1 | £35m | 8.5% | 2018-07-30 |
| Leicester City Council | Other | 3 | £34m | 8.1% | 2021-11-30 |
| Nottinghamshire County Council | Other | 7 | £31m | 7.5% | 2025-01-15 |
| Bath and North East Somerset CouncilNew | Other | 2 | £28m | 6.8% | 2025-02-19 |
| Oxfordshire County Council | Other | 2 | £20m | 4.8% | 2019-09-05 |
| Derbyshire County Council | Other | 4 | £17m | 4.2% | 2022-03-21 |
| Gloucestershire County Council | Other | 2 | £12m | 2.8% | 2022-01-31 |
| Rotherham MBC | Other | 1 | £11m | 2.6% | 2017-12-19 |
| Wiltshire Council | Other | 1 | £9m | 2.2% | 2017-12-21 |
| capitalEsourcing | Other | 2 | £9m | 2.2% | 2022-03-07 |
| Cumbria County Council | Other | 4 | £8m | 1.9% | 2019-06-12 |
| WAKEFIELD COUNCIL | Other | 2 | £7m | 1.6% | 2019-07-11 |
| Salford Royal NHS Foundation Trust | Other | 1 | £6m | 1.5% | 2019-04-03 |
| Peterborough City Council | Other | 2 | £6m | 1.5% | 2018-08-13 |
| Milton Keynes Council | Other | 2 | £5m | 1.2% | 2018-08-10 |
| Lancashire County Council | Other | 2 | £4m | 1.0% | 2016-10-28 |
| Sheffield City Council | Other | 1 | £3m | 0.8% | 2017-10-01 |
| Wolverhampton City Council | Other | 2 | £3m | 0.7% | 2019-08-31 |
| City of Bradford Metropolitan District Council | Other | 3 | £3m | 0.6% | 2023-03-20 |
| South Tyneside Council | Other | 2 | £3m | 0.6% | 2016-09-20 |
| Luton Council | Other | 4 | £2m | 0.6% | 2023-01-11 |
| Manchester City Council | Other | 4 | £2m | 0.5% | 2022-09-05 |
| South of England Procurement Centre | Other | 1 | £2m | 0.5% | 2021-01-05 |
| Leicestershire Partnership NHS Trust | Other | 1 | £2m | 0.5% | 2022-12-01 |
| London Borough of HackneyNew | Other | 5 | £2m | 0.5% | 2026-02-02 |
| Wakefield Council Customer Service | Other | 1 | £2m | 0.4% | 2017-10-03 |
| Warwickshire County Council | Other | 3 | £1m | 0.3% | 2016-04-25 |
| NORTH TYNESIDE COUNCIL | Other | 2 | £993k | 0.2% | 2019-01-16 |
| Tower Hamlets | Other | 2 | £889k | 0.2% | 2021-02-12 |
| Welland Procurement Unit | Other | 2 | £540k | 0.1% | 2017-08-07 |
| Leicestershire County Council | Other | 4 | £452k | 0.1% | 2022-03-15 |
| Barnsley Metropolitan Borough Council | Other | 2 | £340k | 0.1% | 2018-04-09 |
| Leicestershire Police | Other | 2 | £227k | 0.1% | 2024-03-26 |
| Espo | Other | 1 | £188k | 0.0% | 2017-11-07 |
| Health Education England | Other | 5 | £182k | 0.0% | 2023-03-22 |
| CROYDON COUNCIL | Other | 1 | £50k | 0.0% | 2017-10-13 |
| Sefton Metropolitan Borough CouncilNew | Other | 1 | £0k | 0.0% | 2025-12-01 |
| Coventry City Council | Other | 3 | £0k | 0.0% | 2021-11-12 |
| Solihull MBC | Other | 1 | £0k | 0.0% | 2021-09-03 |
| Coventry - Solihull - Warwickshire | Other | 1 | £0k | 0.0% | 2017-07-28 |
| London Borough of Ealing | Other | 1 | £0k | 0.0% | 2017-02-08 |
| Blackpool Council | Other | 2 | £0k | 0.0% | 2016-01-18 |
| Somerset Council | Other | 2 | £0k | 0.0% | |
| Bedford Borough Council | Other | 2 | £0k | 0.0% | |
| Blackburn With Darwen Borough Council | Other | 1 | £0k | 0.0% | |
| NHS Bedfordshire, Luton and Milton Keynes Integrated Care Board | Other | 1 | £0k | 0.0% | |
| Greater Manchester Mental Health NHS Foundation Trust | Other | 4 | £0k | 0.0% | |
| Durham County Council | Other | 1 | £0k | 0.0% | |
| Newcastle City Council | Other | 2 | £0k | 0.0% | |
| NHS England | Other | 1 | £0k | 0.0% | |
| NHS London Commercial Hub on behalf of NHS South East London ICB | Other | 1 | £0k | 0.0% | |
| North East and North Cumbria Integrated Care Board | Other | 2 | £0k | 0.0% | |
| Solihull Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Ministry of Justice | Other | 2 | £0k | 0.0% | |
| Stafford Borough Council | Other | 1 | £0k | 0.0% | |
| Sefton Council | Other | 1 | £0k | 0.0% | |
| NHS Sussex Integrated Care Board (ICB) | Other | 1 | £0k | 0.0% | |
| Bristol City Council | Other | 1 | £0k | 0.0% | |
| Cumberland Council | Other | 1 | £0k | 0.0% | |
| Rochdale Metropolitan Borough Council | Other | 1 | £0k | 0.0% | |
| Liverpool City Council | Other | 1 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 2 | £0k | 0.0% | |
| Royal Borough of Kensington & Chelsea | Other | 1 | £0k | 0.0% | |
| West Sussex County Council | Other | 3 | £0k | 0.0% | |
| Office of the Police and Crime Commissioner for Leicestershire | Other | 1 | £0k | 0.0% | |
| Royal Borough of Greenwich | Other | 3 | £0k | 0.0% | |
| Hertfordshire Partnership NHS University Foundation Trust | Other | 4 | £0k | 0.0% | |
| NHS Wakefield CCG | Other | 1 | £0k | 0.0% | |