| London Borough of Bromley | Other | 1 | £51m | 57.0% | 2019-09-03 |
| Transport for LondonNew | Other | 1 | £12m | 12.8% | 2025-05-16 |
| Ministry of Defence | Other | 2 | £9m | 9.5% | 2016-08-11 |
| D V L A | Other | 2 | £2m | 2.6% | 2016-09-12 |
| Bristol City Council | Other | 2 | £2m | 2.5% | 2017-12-21 |
| GREATER MANCHESTER EDUCATION TRUST | Other | 1 | £2m | 2.2% | 2021-03-01 |
| Highways Agency | Other | 1 | £2m | 1.8% | 2017-05-17 |
| Crown Commercial Service | Other | 13 | £2m | 1.8% | 2017-05-31 |
| Stoke-on-Trent City Council | Other | 1 | £1m | 1.1% | 2020-02-10 |
| Cornwall Council | Other | 1 | £989k | 1.1% | 2024-03-11 |
| Department for Education | Other | 3 | £939k | 1.0% | 2021-07-28 |
| South East Consortium | Other | 4 | £693k | 0.8% | 2021-01-18 |
| H M REVENUE & CUSTOMS | Other | 1 | £565k | 0.6% | 2022-08-11 |
| Cabinet Office | Other | 2 | £492k | 0.5% | 2022-05-30 |
| NHS Commissioning Board | Other | 1 | £381k | 0.4% | 2016-09-30 |
| Fortis Living | Other | 1 | £350k | 0.4% | 2016-09-15 |
| DEFRA | Other | 1 | £308k | 0.3% | 2020-06-24 |
| Hertfordshire County Council | Other | 2 | £301k | 0.3% | 2023-09-05 |
| Wigan Council | Other | 1 | £225k | 0.2% | 2016-06-03 |
| Luton CouncilNew | Other | 1 | £189k | 0.2% | 2025-01-24 |
| Buckinghamshire Council | Other | 1 | £185k | 0.2% | 2021-11-08 |
| Durham County CouncilNew | Other | 1 | £180k | 0.2% | 2025-11-24 |
| Middlesbrough Council | Other | 3 | £173k | 0.2% | 2024-02-21 |
| London Borough of Hackney | Other | 1 | £170k | 0.2% | 2022-02-01 |
| Sunderland City Council | Other | 4 | £164k | 0.2% | 2019-05-10 |
| Leeds City Council | Other | 1 | £163k | 0.2% | 2018-03-31 |
| Bournemouth Christchurch and Poole Council | Other | 1 | £148k | 0.2% | 2023-02-27 |
| Lancashire Constabulary | Other | 1 | £124k | 0.1% | 2020-07-14 |
| Capita PLC | Other | 1 | £120k | 0.1% | 2020-07-15 |
| Merseyside Fire and Rescue Authority | Other | 1 | £100k | 0.1% | 2021-09-01 |
| Epsom & Ewell Borough Council | Other | 1 | £91k | 0.1% | 2020-12-31 |
| HM Revenue & Customs | Other | 1 | £80k | 0.1% | 2016-05-20 |
| Avon & Somerset Constabulary | Other | 1 | £79k | 0.1% | 2016-03-07 |
| East Riding of Yorkshire Council | Other | 1 | £70k | 0.1% | 2023-11-03 |
| Redcar and Cleveland Borough Council | Other | 1 | £66k | 0.1% | 2018-07-11 |
| Darlington Borough Council | Other | 1 | £60k | 0.1% | 2017-05-30 |
| Ministry of Justice | Other | 1 | £60k | 0.1% | 2013-09-30 |
| Teignbridge District Council | Other | 1 | £55k | 0.1% | 2023-12-22 |
| London Borough of Enfield | Other | 1 | £53k | 0.1% | 2023-03-27 |
| Brighton and Hove City Council | Other | 1 | £50k | 0.1% | 2019-11-01 |
| North Lincolnshire CouncilNew | Other | 1 | £46k | 0.1% | 2025-02-06 |
| Cumbria County Council | Other | 1 | £42k | 0.0% | 2017-04-13 |
| Maritime & Coastguard Agency | Other | 3 | £41k | 0.0% | 2017-03-29 |
| West Oxfordshire District Council | Other | 1 | £35k | 0.0% | 2024-05-07 |
| North Yorkshire Police | Other | 1 | £31k | 0.0% | 2024-03-28 |
| MCA - Maritime and Coastguard Agency | Other | 1 | £17k | 0.0% | 2019-12-30 |
| Ofgem | Other | 1 | £0k | 0.0% | 2015-08-26 |
| West Midlands Combined Authority | Other | 1 | £0k | 0.0% | |
| Borough Council of Calderdale | Other | 1 | £0k | 0.0% | |
| South Ayrshire Council | Other | 1 | £0k | 0.0% | |
| Suffolk County Council | Other | 1 | £0k | 0.0% | |
| NHS Business Services Authority | Other | 1 | £0k | 0.0% | |
| BBC (British Broadcasting Corporation) | Other | 2 | £0k | 0.0% | |
| Cambridgeshire and Peterborough Combined Authority | Other | 1 | £0k | 0.0% | |
| East Hertfordshire District Council | Other | 1 | £0k | 0.0% | |
| Isle of Wight Council | Other | 1 | £0k | 0.0% | |
| Department for Education acting through the Education and Skills Funding Agency | Other | 1 | £0k | 0.0% | |
| Scottish Police Authority | Other | 1 | £0k | 0.0% | |