| Driver and Vehicle Licensing AgencyNew | Other | 2 | £9m | 20.4% | 2025-05-06 |
| NHS Shared Business Services Ltd (NHS SBS) | Other | 1 | £8m | 16.8% | 2021-10-14 |
| Espo | Other | 2 | £7m | 15.0% | 2023-01-12 |
| NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUSTNew | Other | 1 | £6m | 12.6% | 2024-10-09 |
| Coventry City Council | Other | 7 | £5m | 11.1% | 2026-03-31 |
| Bedford Borough CouncilNew | Other | 1 | £2m | 3.3% | 2025-04-28 |
| Office for National StatisticsNew | Other | 2 | £920k | 2.0% | 2026-02-18 |
| CHESHIRE EAST COUNCIL | Other | 2 | £903k | 1.9% | 2022-08-16 |
| Crown Commercial ServiceNew | Other | 1 | £839k | 1.8% | 2024-12-11 |
| Durham County Council | Other | 3 | £606k | 1.3% | 2023-10-23 |
| East Sussex County CouncilNew | Other | 1 | £596k | 1.3% | 2025-03-21 |
| Warrington Borough Council | Other | 2 | £531k | 1.1% | 2023-11-27 |
| Cafcass | Other | 3 | £456k | 1.0% | 2025-04-01 |
| NCG Corporation | Other | 2 | £450k | 1.0% | 2023-04-02 |
| City of London Corporation | Other | 2 | £410k | 0.9% | 2024-11-16 |
| North Lincolnshire Council | Other | 2 | £378k | 0.8% | 2023-11-07 |
| The Insolvency Service | Other | 3 | £320k | 0.7% | 2023-01-03 |
| Peabody TrustNew | Other | 1 | £268k | 0.6% | 2025-03-18 |
| NHS Business Services Authority | Other | 1 | £220k | 0.5% | 2020-12-07 |
| West Yorkshire Combined AuthorityNew | Other | 1 | £167k | 0.4% | 2025-03-01 |
| South Yorkshire PoliceNew | Other | 1 | £162k | 0.3% | 2025-02-27 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £150k | 0.3% | 2023-09-27 |
| GREENSQUAREACCORD LIMITEDNew | Other | 1 | £135k | 0.3% | 2024-08-07 |
| West Sussex County Council | Other | 2 | £134k | 0.3% | 2025-07-22 |
| London Borough of Hammersmith & FulhamNew | Other | 1 | £99k | 0.2% | 2025-10-08 |
| Norfolk and Norwich University Hospitals NHS Foundation Trust | Other | 1 | £95k | 0.2% | 2024-04-30 |
| HM Land Registry | Other | 1 | £95k | 0.2% | 2020-12-07 |
| NTW Solutions Ltd | Other | 1 | £89k | 0.2% | 2023-10-11 |
| City of Doncaster Council | Other | 1 | £86k | 0.2% | 2023-09-18 |
| Sheffield Teaching Hospitals NHS Foundation TrustNew | Other | 2 | £86k | 0.2% | 2024-09-25 |
| BIP SOLUTIONS LIMITEDNew | Other | 1 | £79k | 0.2% | 2025-12-12 |
| H M REVENUE & CUSTOMS | Other | 1 | £74k | 0.2% | 2022-06-20 |
| Ofgem | Other | 1 | £73k | 0.2% | 2023-10-11 |
| Sussex Partnership NHS Foundation TrustNew | Other | 1 | £70k | 0.2% | 2025-01-31 |
| UNIVERSITY OF NOTTINGHAM (THE) | Other | 2 | £67k | 0.1% | 2022-07-28 |
| Government Legal Department | Other | 1 | £61k | 0.1% | 2022-10-17 |
| Driver & Vehicle Standards Agency | Other | 2 | £60k | 0.1% | 2021-04-20 |
| Leicestershire County Council | Other | 1 | £60k | 0.1% | 2022-07-14 |
| London Borough of Hackney | Other | 1 | £58k | 0.1% | 2023-05-01 |
| United Lincolnshire Hospitals NHS Trust | Other | 1 | £55k | 0.1% | 2023-06-07 |
| Sussex PoliceNew | Other | 1 | £55k | 0.1% | 2024-10-07 |
| NHS Property Services LimitedNew | Other | 1 | £54k | 0.1% | 2024-09-21 |
| Kent Community Health NHS Foundation Trust | Other | 1 | £53k | 0.1% | 2022-06-07 |
| English Heritage Trust | Other | 1 | £50k | 0.1% | 2023-11-23 |
| East Riding of Yorkshire Council | Other | 1 | £50k | 0.1% | 2020-05-03 |
| Cumbria County Council | Other | 1 | £48k | 0.1% | 2023-01-03 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 2 | £48k | 0.1% | 2023-11-06 |
| Basingstoke and Deane Borough Council | Other | 1 | £46k | 0.1% | 2024-04-15 |
| Amplius LivingNew | Other | 1 | £42k | 0.1% | 2025-10-24 |
| Derbyshire County Council | Other | 1 | £40k | 0.1% | 2022-04-26 |
| United Lincolnshire Teaching Hospitals NHS TrustNew | Other | 1 | £37k | 0.1% | 2026-02-23 |
| Kingston Upon Hull City Council | Other | 1 | £33k | 0.1% | 2021-05-04 |
| DRIVER & VEHICLE LICENSING AGENCY | Other | 1 | £32k | 0.1% | 2022-01-14 |
| DRIVER & VEHICLE LICENSING AGENCY | Other | 1 | £32k | 0.1% | 2021-03-03 |
| Warwickshire Police | Other | 1 | £31k | 0.1% | 2023-11-17 |
| Ministry of Defence | Other | 1 | £27k | 0.1% | 2022-09-30 |
| SOMERSET NHS FOUNDATION TRUSTNew | Other | 1 | £27k | 0.1% | 2025-08-18 |
| Nursing And Midwifery Council | Other | 1 | £26k | 0.1% | 2023-01-19 |
| Leeds City Council | Other | 2 | £24k | 0.1% | 2022-10-21 |
| Home OfficeNew | Other | 1 | £22k | 0.0% | 2025-08-22 |
| MCA - Maritime and Coastguard AgencyNew | Other | 1 | £20k | 0.0% | 2025-12-01 |
| Intellectual Property OfficeNew | Other | 1 | £18k | 0.0% | 2024-12-13 |
| The Police and Crime Commissioner for Humberside | Other | 2 | £0k | 0.0% | |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 3 | £0k | 0.0% | |
| Hull City Council | Other | 1 | £0k | 0.0% | |
| NHS Shared Business Services | Other | 4 | £0k | 0.0% | |
| Magenta Living | Other | 1 | £0k | 0.0% | |
| The Police and Crime Commissioner for Warwickshire | Other | 1 | £0k | 0.0% | |
| Police and Crime Commissioner for Gwent | Other | 1 | £0k | 0.0% | |
| Bristol City Council | Other | 1 | £0k | 0.0% | |