| Yorkshire Purchasing Organisation | Other | 23 | £88m | 27.9% | 2026-03-06 |
| ORBIT GROUP LIMITEDNew | Other | 2 | £48m | 15.3% | 2025-11-05 |
| London Borough of Southwark | Other | 4 | £26m | 8.1% | 2025-09-12 |
| The Police and Crime Commissioner for Derbyshire | Other | 1 | £16m | 5.1% | 2021-03-12 |
| Bristol City Council | Other | 1 | £15m | 4.7% | 2022-03-21 |
| London Borough of Bexley | Other | 1 | £10m | 3.1% | 2018-06-25 |
| Peabody Trust | Other | 1 | £8m | 2.5% | 2018-07-17 |
| CRESCENT PURCHASING LIMITED | Other | 1 | £8m | 2.4% | 2016-05-26 |
| Thurrock Borough Council - Anti Social Behaviour | Other | 1 | £7m | 2.2% | 2024-03-18 |
| Staffordshire County Council | Other | 5 | £6m | 1.9% | 2024-09-30 |
| Gibbs Laidler Consulting LLP | Other | 5 | £6m | 1.8% | 2025-08-25 |
| Somerset County Council | Other | 1 | £5m | 1.6% | 2018-08-23 |
| Adur District Council | Other | 1 | £5m | 1.6% | 2016-06-06 |
| Daventry District Council | Other | 2 | £4m | 1.4% | 2021-03-30 |
| Sheffield City Council | Other | 5 | £4m | 1.2% | 2026-04-02 |
| Durham County Council | Other | 1 | £3m | 1.1% | 2021-07-26 |
| Sandwell Metropolitan Borough Council | Other | 1 | £3m | 1.1% | 2021-09-21 |
| DERBY CITY COUNCIL | Other | 2 | £3m | 1.0% | 2018-02-16 |
| Housing & Care 21 | Other | 1 | £3m | 1.0% | 2016-04-01 |
| Borough Of Poole | Other | 1 | £3m | 1.0% | 2016-09-05 |
| Exeter City Council | Other | 2 | £3m | 1.0% | 2022-01-17 |
| Stoke-on-Trent City Council | Other | 1 | £3m | 0.8% | 2018-07-31 |
| Swale Borough Council | Other | 1 | £2m | 0.8% | 2016-07-13 |
| Darlington Borough Council | Other | 1 | £2m | 0.8% | 2022-04-22 |
| Ashford Borough Council | Other | 2 | £2m | 0.7% | 2014-08-01 |
| Basildon Borough Council | Other | 1 | £2m | 0.7% | 2021-03-19 |
| Greater Manchester Combined Authority - GMP | Other | 1 | £2m | 0.7% | 2024-05-17 |
| Manchester City Council | Other | 7 | £2m | 0.7% | 2026-03-19 |
| East Cambridgeshire District Council | Other | 1 | £2m | 0.5% | 2024-03-05 |
| Birmingham City Council | Other | 1 | £1m | 0.5% | 2023-03-23 |
| Stockport Metropolitan Borough Council | Other | 7 | £1m | 0.4% | 2017-10-24 |
| Wandsworth Borough Council | Other | 1 | £1m | 0.4% | 2018-03-29 |
| Irwell Valley Housing Association | Other | 1 | £1m | 0.4% | 2016-03-15 |
| East Suffolk Council | Other | 1 | £1m | 0.4% | 2024-05-17 |
| Liverpool City Council | Other | 1 | £1m | 0.4% | 2018-04-27 |
| Cleveland Fire Authority | Other | 1 | £1m | 0.4% | 2022-01-21 |
| British Transport Police | Other | 1 | £1m | 0.4% | 2022-09-07 |
| Humberside Fire and Rescue Service | Other | 1 | £1m | 0.3% | 2020-09-30 |
| Kirklees CouncilNew | Other | 2 | £1m | 0.3% | 2026-01-21 |
| Wokingham Borough Council | Other | 1 | £919k | 0.3% | 2018-05-21 |
| Plymouth City Council | Other | 1 | £860k | 0.3% | 2016-03-19 |
| LIVEWEST HOMES LIMITED | Other | 1 | £850k | 0.3% | 2018-12-04 |
| Surrey & Boarders Partnership NHS on behalf of NHS Commercial SolutionsNew | Other | 1 | £808k | 0.3% | 2025-09-08 |
| Northern Ireland Housing ExecutiveNew | Other | 4 | £652k | 0.2% | 2026-03-06 |
| LGSS Insurance on behalf of Norwich City Council | Other | 1 | £632k | 0.2% | 2019-03-26 |
| London Borough of EnfieldNew | Other | 1 | £590k | 0.2% | 2025-03-18 |
| Redcar and Cleveland Borough Council | Other | 2 | £580k | 0.2% | 2025-03-14 |
| Uttlesford District Council | Other | 2 | £496k | 0.2% | 2018-09-30 |
| North Hertfordshire District Council | Other | 2 | £453k | 0.1% | 2021-03-29 |
| Monmouthshire Housing AssociationNew | Other | 2 | £415k | 0.1% | 2026-01-20 |
| Cambridgeshire County Council | Other | 4 | £404k | 0.1% | 2022-09-27 |
| London Borough of HounslowNew | Other | 4 | £379k | 0.1% | 2026-02-27 |
| Newark & Sherwood District Council | Other | 1 | £341k | 0.1% | 2019-01-21 |
| Humberside Fire & Rescue Service | Other | 1 | £308k | 0.1% | 2023-09-18 |
| Shropshire Council | Other | 2 | £305k | 0.1% | 2019-03-04 |
| ISLINGTON & SHOREDITCH HOUSING ASSOCIATION LIMITED | Other | 1 | £291k | 0.1% | 2023-11-01 |
| The University of Nottingham | Other | 3 | £276k | 0.1% | 2021-07-13 |
| London Borough of Bromley | Other | 3 | £246k | 0.1% | 2016-06-13 |
| Fylde Borough Council | Other | 8 | £230k | 0.1% | 2021-03-22 |
| Westward Housing Group | Other | 1 | £212k | 0.1% | 2018-10-27 |
| The Mill Academy | Other | 2 | £160k | 0.1% | 2022-05-31 |
| Swanage Town Council | Other | 2 | £140k | 0.0% | 2026-03-23 |
| Telford & Wrekin Council | Other | 1 | £136k | 0.0% | 2016-03-22 |
| South Yorkshire Pensions AuthorityNew | Other | 1 | £126k | 0.0% | 2025-03-06 |
| BIRMINGHAM CHILDRENS HOSPITAL | Other | 1 | £119k | 0.0% | 2016-06-21 |
| D V L A | Other | 2 | £106k | 0.0% | 2018-03-22 |
| Essex County Council | Other | 1 | £100k | 0.0% | 2022-06-30 |
| Optivo | Other | 1 | £94k | 0.0% | 2018-04-01 |
| Hart District Council | Other | 1 | £94k | 0.0% | 2020-03-11 |
| Welland Procurement Unit | Other | 1 | £90k | 0.0% | 2021-04-22 |
| Poole Housing Partnership Ltd | Other | 1 | £71k | 0.0% | 2018-09-21 |
| Stroud District Council | Other | 1 | £69k | 0.0% | 2023-09-26 |
| East & North Hertfordshire NHS TrustNew | Other | 1 | £55k | 0.0% | 2025-05-07 |
| Department for Work & Pensions | Other | 1 | £51k | 0.0% | 2018-11-29 |
| Stevenage Borough Council | Other | 1 | £41k | 0.0% | 2023-09-04 |
| Yate Town Council | Other | 2 | £38k | 0.0% | 2023-03-28 |
| The Princess Alexandra Hospital NHS TrustNew | Other | 1 | £38k | 0.0% | 2025-05-30 |
| Cambridgeshire and Peterborough Combined Authority | Other | 1 | £38k | 0.0% | 2024-03-27 |
| LONDON & QUADRANT HOUSING TRUSTNew | Other | 1 | £34k | 0.0% | 2026-01-27 |
| Swanley Town Council | Other | 1 | £24k | 0.0% | 2023-06-01 |
| Halton Borough Council | Other | 4 | £18k | 0.0% | 2016-02-08 |
| Sussex Housing & CareNew | Other | 1 | £15k | 0.0% | 2026-03-19 |
| Stroud Town Council | Other | 1 | £13k | 0.0% | 2024-05-13 |
| COTTSWAY HOUSING ASSOCIATION LIMITEDNew | Other | 2 | £9k | 0.0% | 2026-03-06 |
| Thanet District Council | Other | 1 | £9k | 0.0% | 2015-12-19 |
| Suffolk Sourcing | Other | 1 | £3k | 0.0% | 2019-02-25 |
| Northwards Housing | Other | 1 | £0k | 0.0% | 2016-02-26 |
| Havebury Housing PartnershipNew | Other | 4 | £0k | 0.0% | 2026-05-07 |
| Belfast HarbourNew | Other | 2 | £0k | 0.0% | 2026-04-13 |
| Hexagon Housing Association LimitedNew | Other | 1 | £0k | 0.0% | 2026-03-30 |
| Buckingham Town CouncilNew | Other | 1 | £0k | 0.0% | 2026-03-16 |
| Mid Ulster District CouncilNew | Other | 1 | £0k | 0.0% | 2026-02-26 |
| Armagh City, Banbridge and Craigavon Borough CouncilNew | Other | 1 | £0k | 0.0% | 2026-02-23 |
| Reading Borough CouncilNew | Other | 4 | £0k | 0.0% | 2026-02-13 |
| Barnet Homes LtdNew | Other | 6 | £0k | 0.0% | 2026-01-13 |
| Arun District CouncilNew | Other | 2 | £0k | 0.0% | 2026-01-05 |
| South Holland District CouncilNew | Other | 5 | £0k | 0.0% | 2025-07-04 |
| London Universities Purchasing ConsortiumNew | Other | 1 | £0k | 0.0% | 2025-07-03 |
| Oldham Council | Other | 1 | £0k | 0.0% | 2019-03-25 |
| UNIVERSITY OF SHEFFIELD | Other | 1 | £0k | 0.0% | 2016-09-20 |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 1 | £0k | 0.0% | |
| PLYMOUTH COMMUNITY HOMES LIMITED | Other | 1 | £0k | 0.0% | |
| The Council of the Borough of Kirklees | Other | 1 | £0k | 0.0% | |
| CITY HOSPITALS INDEPENDENT COMMERCIAL ENTERPRISES LIMITED | Other | 1 | £0k | 0.0% | |
| Southway Housing Trust Limited | Other | 3 | £0k | 0.0% | |
| QE Facilities Ltd | Other | 1 | £0k | 0.0% | |
| Caredig Ltd | Other | 2 | £0k | 0.0% | |
| ROOFTOP HOUSING GROUP LIMITED | Other | 2 | £0k | 0.0% | |
| LEISURESK LIMITED | Other | 1 | £0k | 0.0% | |
| London Borough of Sutton | Other | 5 | £0k | 0.0% | |
| North Somerset Council | Other | 1 | £0k | 0.0% | |
| Boston Borough Council | Other | 5 | £0k | 0.0% | |
| Broadacres Housing Association | Other | 4 | £0k | 0.0% | |
| Southampton City Council | Other | 1 | £0k | 0.0% | |
| North Warwickshire Borough Council (NWB) | Other | 1 | £0k | 0.0% | |
| 7 Forces Commercial Services | Other | 1 | £0k | 0.0% | |
| Fenland District Council | Other | 1 | £0k | 0.0% | |
| University of Leicester | Other | 1 | £0k | 0.0% | |
| Salix Homes Limited | Other | 1 | £0k | 0.0% | |
| East Renfrewshire Council | Other | 1 | £0k | 0.0% | |
| Scottish Fire and Rescue Service | Other | 1 | £0k | 0.0% | |
| Bedford Borough Council | Other | 2 | £0k | 0.0% | |
| Erewash Borough Council | Other | 2 | £0k | 0.0% | |
| Knowsley Council | Other | 1 | £0k | 0.0% | |
| Flagship Housing Group | Other | 1 | £0k | 0.0% | |
| Rossendale Borough Council | Other | 1 | £0k | 0.0% | |
| Incommunities Ltd | Other | 1 | £0k | 0.0% | |
| Wirral Council | Other | 1 | £0k | 0.0% | |
| Hereford & Worcester Fire & Rescue Service | Other | 1 | £0k | 0.0% | |
| Derbyshire Dales District Council | Other | 1 | £0k | 0.0% | |
| Borough of Broxbourne | Other | 1 | £0k | 0.0% | |
| Blackburn With Darwen Borough Council | Other | 1 | £0k | 0.0% | |
| Cherwell District Council | Other | 1 | £0k | 0.0% | |
| London Borough of Brent | Other | 3 | £0k | 0.0% | |
| North Yorkshire County Council | Other | 1 | £0k | 0.0% | |
| Humber Bridge Board | Other | 1 | £0k | 0.0% | |
| Rutland County Council | Other | 1 | £0k | 0.0% | |
| South Oxfordshire District Council | Other | 5 | £0k | 0.0% | |
| Wyre Council | Other | 1 | £0k | 0.0% | |
| Worthing Borough Council and Adur District Council | Other | 2 | £0k | 0.0% | |
| Govan Housing Association Limited | Other | 1 | £0k | 0.0% | |
| University of Sunderland | Other | 4 | £0k | 0.0% | |
| Newcastle University | Other | 1 | £0k | 0.0% | |
| Maidstone Borough Council | Other | 1 | £0k | 0.0% | |
| West Lothian Council | Other | 1 | £0k | 0.0% | |
| Somerset West and Taunton Council | Other | 3 | £0k | 0.0% | |
| CROYDON COUNCIL | Other | 1 | £0k | 0.0% | |
| Jobs & Business Glasgow | Other | 3 | £0k | 0.0% | |
| Gentoo Group Limited | Other | 4 | £0k | 0.0% | |
| Milton Keynes Council | Other | 2 | £0k | 0.0% | |
| Northampton Partnership Homes | Other | 2 | £0k | 0.0% | |
| Runnymede Borough Council | Other | 3 | £0k | 0.0% | |
| Yorkshire Housing Limited plus Subsidiaries | Other | 3 | £0k | 0.0% | |
| Gravesham Borough Council | Other | 1 | £0k | 0.0% | |
| Luton Council | Other | 1 | £0k | 0.0% | |
| Nottinghamshire County Council | Other | 2 | £0k | 0.0% | |
| Lancashire County Council | Other | 1 | £0k | 0.0% | |
| Argyll and Bute Council | Other | 8 | £0k | 0.0% | |
| Shropshire & Wrekin Fire | Other | 1 | £0k | 0.0% | |
| London Borough of Haringey | Other | 1 | £0k | 0.0% | |
| Kingdom Housing Association Limited | Other | 1 | £0k | 0.0% | |
| City of Bradford Metropolitan District Council | Other | 1 | £0k | 0.0% | |
| Canterbury City Council | Other | 1 | £0k | 0.0% | |
| Peaks & Plains Housing Trust | Other | 4 | £0k | 0.0% | |
| CALICO HOMES LIMITED | Other | 3 | £0k | 0.0% | |
| North East Lincolnshire Borough Council | Other | 1 | £0k | 0.0% | |
| Your Housing Group Ltd | Other | 3 | £0k | 0.0% | |
| Look Ahead Care Support and Housing | Other | 1 | £0k | 0.0% | |
| Key Housing Association | Other | 1 | £0k | 0.0% | |
| BELIEVE HOUSING LIMITED | Other | 2 | £0k | 0.0% | |
| South Derbyshire District Council | Other | 1 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 1 | £0k | 0.0% | |
| NCG | Other | 1 | £0k | 0.0% | |
| Melton Borough Council | Other | 1 | £0k | 0.0% | |
| Citizen Housing Group Ltd | Other | 4 | £0k | 0.0% | |
| Broads Authority | Other | 1 | £0k | 0.0% | |
| Board of Trustees of the Royal Botanic Gardens Kew | Other | 1 | £0k | 0.0% | |
| PA Housing | Other | 2 | £0k | 0.0% | |
| Cyngor Sir Ceredigion County Council | Other | 2 | £0k | 0.0% | |
| Hull City Council | Other | 1 | £0k | 0.0% | |
| Worcestershire County Council | Other | 1 | £0k | 0.0% | |
| Trafford Council | Other | 1 | £0k | 0.0% | |
| NHS Greater Glasgow and Clyde | Other | 1 | £0k | 0.0% | |
| North Devon District Council | Other | 3 | £0k | 0.0% | |
| Kent County Council | Other | 2 | £0k | 0.0% | |
| Chesterfield Borough Council | Other | 1 | £0k | 0.0% | |
| Merseyside Fire & Rescue Service | Other | 1 | £0k | 0.0% | |
| Broxtowe Borough Council & Liberty Leisure Limited | Other | 1 | £0k | 0.0% | |
| Oadby & Wigston | Other | 1 | £0k | 0.0% | |
| Bishops Stortford Town Council | Other | 1 | £0k | 0.0% | |
| Dundee City Council | Other | 2 | £0k | 0.0% | |
| Coventry City Council | Other | 1 | £0k | 0.0% | |
| Dorset Council | Other | 1 | £0k | 0.0% | |
| Gwynedd Council | Other | 1 | £0k | 0.0% | |
| Cheshire West and Chester Council | Other | 1 | £0k | 0.0% | |
| Police and Crime Commissioner for North Wales | Other | 1 | £0k | 0.0% | |
| Rushcliffe Borough Council | Other | 1 | £0k | 0.0% | |
| Volair Ltd | Other | 1 | £0k | 0.0% | |
| The Liverpool City Region Combined Authority and Merseytravel | Other | 1 | £0k | 0.0% | |
| North Yorkshire Police, Fire and Crime Commissioner Fire and Rescue Authority | Other | 1 | £0k | 0.0% | |
| Tyne & Wear Fire and Rescue Authority and TWFRS Ltd | Other | 1 | £0k | 0.0% | |
| Mid & West Wales Fire & Rescue Service | Other | 1 | £0k | 0.0% | |
| WAKEFIELD COUNCIL | Other | 1 | £0k | 0.0% | |
| South Yorkshire Fire Authority | Other | 1 | £0k | 0.0% | |
| Northumberland County Council | Other | 1 | £0k | 0.0% | |
| LGSS | Other | 6 | £0k | 0.0% | |