| NORTHERN HOUSING CONSORTIUM LIMITED | Other | 223 | £67m | 31.3% | 2026-05-06 |
| Northern Housing Consortium | Other | 123 | £43m | 20.3% | 2018-11-15 |
| NHS Business Services Authority | Other | 7 | £26m | 12.0% | 2026-01-29 |
| South East Consortium | Other | 3 | £10m | 4.7% | 2019-01-25 |
| The Association of North East Councils Limited | Other | 1 | £8m | 3.7% | 2016-11-29 |
| The Technology Procurement Association Ltd (TPA) | Other | 1 | £8m | 3.6% | 2020-10-13 |
| ethecal impact | Other | 1 | £8m | 3.6% | 2020-10-13 |
| Ministry of Justice | Other | 5 | £6m | 3.0% | 2024-12-03 |
| Southern HousingNew | Other | 2 | £4m | 1.8% | 2026-05-15 |
| Longhurst Group | Other | 2 | £3m | 1.3% | 2024-01-01 |
| Sanctuary Housing Group | Other | 2 | £3m | 1.2% | 2022-08-08 |
| Bristol City Council | Other | 1 | £2m | 1.1% | 2019-11-29 |
| Procurement for Housing | Other | 6 | £2m | 0.8% | 2019-09-10 |
| Aster Group LimitedNew | Other | 1 | £1m | 0.6% | 2024-08-01 |
| Magenta Living | Other | 2 | £991k | 0.5% | 2024-04-10 |
| Durham County Council | Other | 2 | £877k | 0.4% | 2024-10-08 |
| Wakefield and District Housing | Other | 2 | £874k | 0.4% | 2020-01-09 |
| Liverpool City Council | Other | 2 | £869k | 0.4% | 2022-03-29 |
| Staffordshire County Council | Other | 2 | £784k | 0.4% | 2024-12-16 |
| Livv Housing Group | Other | 2 | £784k | 0.4% | 2024-08-01 |
| Norwich City Council | Other | 2 | £776k | 0.4% | 2021-09-23 |
| BROMFORD HOUSING GROUP LIMITED | Other | 2 | £724k | 0.3% | 2020-01-01 |
| Kent County Council | Other | 2 | £600k | 0.3% | 2024-02-06 |
| Rotherham Metropolitan Borough Council | Other | 2 | £594k | 0.3% | 2026-01-07 |
| LONDON & QUADRANT HOUSING TRUST LIMITED | Other | 1 | £586k | 0.3% | 2018-01-30 |
| London Borough of Southwark | Other | 1 | £573k | 0.3% | 2016-12-31 |
| AFFINITY SUTTON GROUP LIMITED | Other | 1 | £540k | 0.3% | 2015-10-12 |
| Wolverhampton City Council | Other | 1 | £500k | 0.2% | 2022-08-12 |
| Ongo Homes Limited | Other | 1 | £474k | 0.2% | 2024-04-01 |
| Cheshire West and Chester Council | Other | 4 | £452k | 0.2% | 2026-03-19 |
| HIGHTOWN HOUSING ASSOCIATION LIMITED | Other | 1 | £430k | 0.2% | 2023-09-25 |
| BPHA LIMITED | Other | 2 | £430k | 0.2% | 2022-04-19 |
| Nottingham City Council | Other | 2 | £405k | 0.2% | 2022-01-01 |
| Wakefield and District Housing limited | Other | 1 | £400k | 0.2% | 2024-01-03 |
| The Riverside Group | Other | 1 | £394k | 0.2% | 2020-03-12 |
| Kingston Upon Hull City Council | Other | 1 | £383k | 0.2% | 2019-10-07 |
| Moat Homes Limited | Other | 1 | £364k | 0.2% | 2021-07-20 |
| South Tyneside Council | Other | 3 | £331k | 0.2% | 2023-07-11 |
| Southampton City CouncilNew | Other | 2 | £327k | 0.2% | 2024-06-02 |
| Star Procurement | Other | 2 | £322k | 0.2% | 2024-06-30 |
| Cornwall CouncilNew | Other | 2 | £310k | 0.1% | 2026-04-08 |
| Salix Homes Limited | Other | 1 | £280k | 0.1% | 2023-03-01 |
| Lincolnshire Housing Partnership | Other | 1 | £274k | 0.1% | 2023-04-30 |
| Optivo | Other | 1 | £267k | 0.1% | 2018-03-22 |
| Freebridge Community Housing Limited | Other | 1 | £260k | 0.1% | 2015-06-29 |
| Charnwood Borough Council | Other | 2 | £251k | 0.1% | 2020-10-13 |
| Herefordshire Council | Other | 2 | £248k | 0.1% | 2024-01-05 |
| DERBY CITY COUNCIL | Other | 2 | £243k | 0.1% | 2025-02-10 |
| Luton Borough Council | Other | 1 | £240k | 0.1% | 2024-02-20 |
| Karbon Homes | Other | 1 | £238k | 0.1% | 2019-10-01 |
| Redcar and Cleveland Borough Council | Other | 1 | £224k | 0.1% | 2019-03-22 |
| Oxford City Council | Other | 1 | £212k | 0.1% | 2017-02-21 |
| North East Lincolnshire Council | Other | 2 | £211k | 0.1% | 2017-05-31 |
| CHESHIRE EAST COUNCIL | Other | 2 | £206k | 0.1% | 2023-08-01 |
| One Housing Group | Other | 1 | £205k | 0.1% | 2021-05-01 |
| Hampshire County CouncilNew | Other | 1 | £204k | 0.1% | 2025-02-06 |
| West Sussex County Council | Other | 1 | £200k | 0.1% | 2022-05-09 |
| BT SOUTH TYNESIDE LIMITED | Other | 1 | £200k | 0.1% | 2017-06-19 |
| Crown Commercial Service | Other | 2 | £193k | 0.1% | 2018-05-31 |
| whg | Other | 1 | £189k | 0.1% | 2024-04-30 |
| Isle of Wight Council | Other | 1 | £180k | 0.1% | 2020-05-11 |
| Connexus Homes Limited | Other | 1 | £176k | 0.1% | 2023-10-01 |
| Bolton at Home | Other | 1 | £176k | 0.1% | 2024-01-11 |
| Folkestone and Hythe District Council | Other | 1 | £167k | 0.1% | 2020-09-28 |
| Doncaster MBC | Other | 1 | £160k | 0.1% | 2019-05-31 |
| Epping Forest District Council | Other | 3 | £155k | 0.1% | 2024-09-30 |
| Milton Keynes Council | Other | 1 | £150k | 0.1% | 2023-10-30 |
| WANDLE HOUSING ASSOCIATION LIMITEDNew | Other | 1 | £135k | 0.1% | 2024-08-19 |
| Swale Borough Council | Other | 2 | £125k | 0.1% | 2025-01-31 |
| Leeds City Council | Other | 4 | £121k | 0.1% | 2023-02-07 |
| Hertfordshire County CouncilNew | Other | 1 | £120k | 0.1% | 2024-07-05 |
| Southend-on-sea Borough Council | Other | 1 | £93k | 0.0% | 2022-12-02 |
| Hull City Council | Other | 2 | £91k | 0.0% | 2024-02-15 |
| Bracknell Forest Homes | Other | 1 | £90k | 0.0% | 2016-11-02 |
| Hastings Borough Council | Other | 2 | £87k | 0.0% | 2026-03-01 |
| Eastbourne Borough Council | Other | 3 | £86k | 0.0% | 2022-03-15 |
| NSAH (ALLIANCE HOMES) LIMITED | Other | 2 | £85k | 0.0% | 2023-07-18 |
| WAKEFIELD COUNCIL | Other | 1 | £84k | 0.0% | 2022-10-31 |
| CLARITY PROCUREMENT SOLUTIONS LIMITED | Other | 1 | £82k | 0.0% | 2023-06-22 |
| Cambridgeshire County CouncilNew | Other | 1 | £80k | 0.0% | 2026-02-06 |
| London Borough of Redbridge | Other | 1 | £80k | 0.0% | 2021-06-15 |
| THE CAMBRIDGE HOUSING SOCIETY LTDNew | Other | 1 | £76k | 0.0% | 2024-10-15 |
| LONDON BOROUGH OF HAVERING | Other | 1 | £76k | 0.0% | 2023-11-10 |
| Wealden District Council | Other | 2 | £76k | 0.0% | 2026-02-11 |
| North Northamptonshire Council | Other | 1 | £73k | 0.0% | 2023-07-28 |
| Warrington Borough Council | Other | 1 | £70k | 0.0% | 2020-05-26 |
| Big Lottery Fund, operating as The National Lottery Community Fund | Other | 1 | £67k | 0.0% | 2019-10-07 |
| Newcastle-under-Lyme Borough Council | Other | 1 | £65k | 0.0% | 2015-11-11 |
| London Borough of Hammersmith & FulhamNew | Other | 1 | £60k | 0.0% | 2025-05-12 |
| West Lancashire Borough Council | Other | 1 | £60k | 0.0% | 2023-08-10 |
| Essex County Council | Other | 1 | £60k | 0.0% | 2022-12-20 |
| London Borough of Merton | Other | 1 | £54k | 0.0% | 2022-03-01 |
| London Borough of Camden | Other | 2 | £53k | 0.0% | 2021-12-07 |
| Redditch Borough Council | Other | 1 | £52k | 0.0% | 2023-07-27 |
| London Borough of Bromley | Other | 1 | £52k | 0.0% | 2023-06-10 |
| Wyre Forest District Council | Other | 1 | £50k | 0.0% | 2021-12-22 |
| Cambridgeshire County Council and Peterborough City Council | Other | 1 | £50k | 0.0% | 2021-12-13 |
| Erewash Borough Council | Other | 2 | £50k | 0.0% | 2021-10-31 |
| Ryedale District Council | Other | 1 | £48k | 0.0% | 2021-02-22 |
| Lewes District Council | Other | 1 | £45k | 0.0% | 2022-02-15 |
| Exeter City CouncilNew | Other | 1 | £44k | 0.0% | 2025-04-01 |
| Tamworth Borough CouncilNew | Other | 1 | £44k | 0.0% | 2024-12-20 |
| Sandwell Metropolitan Borough Council | Other | 1 | £41k | 0.0% | 2022-07-25 |
| St Albans City & DistrictNew | Other | 1 | £40k | 0.0% | 2025-10-10 |
| Buckinghamshire Council | Other | 1 | £38k | 0.0% | 2021-09-21 |
| Sefton Council | Other | 2 | £38k | 0.0% | 2019-03-28 |
| Bury Council | Other | 1 | £37k | 0.0% | 2017-09-14 |
| Rother District Council | Other | 1 | £37k | 0.0% | 2022-02-01 |
| Guildford Borough Council | Other | 1 | £36k | 0.0% | 2023-12-20 |
| Waverley Borough CouncilNew | Other | 1 | £35k | 0.0% | 2024-11-08 |
| North Hertfordshire District Council | Other | 1 | £35k | 0.0% | 2022-07-15 |
| Lincolnshire County Council | Other | 1 | £34k | 0.0% | 2024-03-31 |
| Rushcliffe Borough CouncilNew | Other | 1 | £29k | 0.0% | 2024-06-30 |
| Mount Green Housing Association | Other | 1 | £28k | 0.0% | 2022-08-05 |
| NORTH DEVON HOMESNew | Other | 1 | £26k | 0.0% | 2024-08-19 |
| Ashford Borough Council | Other | 1 | £25k | 0.0% | 2015-05-01 |
| Ministry of Housing, Communities & Local Government | Other | 2 | £23k | 0.0% | 2021-05-13 |
| LGSS | Other | 1 | £22k | 0.0% | 2019-09-24 |
| COLLEGE OF POLICING LIMITED | Other | 1 | £15k | 0.0% | 2021-10-05 |
| East Riding of Yorkshire | Other | 1 | £12k | 0.0% | 2019-11-20 |
| Mayor's Office for Policing And CrimeNew | Other | 1 | £12k | 0.0% | 2024-07-22 |
| East Riding of Yorkshire CouncilNew | Other | 1 | £11k | 0.0% | 2024-10-08 |
| Department of Health & Social Care | Other | 1 | £10k | 0.0% | 2019-07-01 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 1 | £9k | 0.0% | 2019-03-31 |
| Sovini Limited | Other | 1 | £9k | 0.0% | 2016-03-08 |
| South Cambridgeshire District Council | Other | 1 | £0k | 0.0% | 2019-08-21 |
| Gateshead Council | Other | 1 | £0k | 0.0% | 2017-06-15 |
| Stonewater Limited | Other | 1 | £0k | 0.0% | 2016-12-13 |
| LINCOLNSHIRE HOUSING PARTNERSHIP LIMITED | Other | 1 | £0k | 0.0% | |
| Dundee City Council | Other | 1 | £0k | 0.0% | |
| Mosscare St Vincent's Housing Group Limited | Other | 1 | £0k | 0.0% | |
| Social Security Scotland | Other | 1 | £0k | 0.0% | |
| COTTSWAY HOUSING ASSOCIATION LIMITED | Other | 1 | £0k | 0.0% | |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 2 | £0k | 0.0% | |
| Northern Ireland Electricity Networks Limited | Other | 1 | £0k | 0.0% | |
| NEPO | Other | 1 | £0k | 0.0% | |
| Leicester City Council | Other | 1 | £0k | 0.0% | |
| ACCENT HOUSING LIMITED | Other | 1 | £0k | 0.0% | |
| Housing 21 | Other | 1 | £0k | 0.0% | |
| THE CALICO GROUP LIMITED | Other | 1 | £0k | 0.0% | |
| Aspire Housing | Other | 1 | £0k | 0.0% | |