| Crown Commercial Service | Other | 2 | £6.7bn | 49.5% | 2019-08-13 |
| Genesis Housing Association | Other | 1 | £3.8bn | 27.8% | 2016-05-16 |
| Espo | Other | 4 | £1.2bn | 9.2% | 2021-05-11 |
| West Mercia Energy (A Local Authority Joint Committee of Shropshire Council, Worcestershire County Council, Telford & Wrekin Council and Herefordshire Council) | Other | 5 | £710m | 5.3% | 2021-01-04 |
| City of London Corporation | Other | 8 | £124m | 0.9% | 2021-09-30 |
| Saltwood C Of E Primary School | Other | 1 | £113m | 0.8% | 2018-12-13 |
| Kent County Council (via LASER) | Other | 1 | £113m | 0.8% | 2018-12-12 |
| Places for People | Other | 10 | £109m | 0.8% | 2023-09-27 |
| Places for People Group | Other | 2 | £100m | 0.7% | 2021-01-11 |
| CHURCHMARKETPLACE LTD | Other | 1 | £100m | 0.7% | 2019-06-17 |
| Aspire Housing | Other | 2 | £62m | 0.5% | 2017-12-04 |
| North East Lincolnshire Council | Other | 1 | £54m | 0.4% | 2020-02-25 |
| East Riding of Yorkshire Council | Other | 3 | £43m | 0.3% | 2023-07-19 |
| North Somerset Council | Other | 1 | £25m | 0.2% | 2017-10-13 |
| Places for People Group Limited | Other | 7 | £22m | 0.2% | 2021-03-11 |
| LG Energy Group | Other | 2 | £20m | 0.1% | 2022-03-28 |
| LGSS | Other | 1 | £18m | 0.1% | 2019-07-12 |
| Liverpool City Council | Other | 2 | £17m | 0.1% | 2022-08-31 |
| UNITED LEARNING TRUST | Other | 1 | £16m | 0.1% | 2019-11-28 |
| Grand Union Housing Group | Other | 6 | £15m | 0.1% | 2020-12-17 |
| Kent County Council T/a LASER | Other | 2 | £13m | 0.1% | 2019-12-19 |
| Atomic Weapons Establishment | Other | 1 | £12m | 0.1% | 2022-03-14 |
| Coventry City Council | Other | 1 | £12m | 0.1% | 2022-02-28 |
| Wyre Borough Council | Other | 1 | £11m | 0.1% | 2019-04-29 |
| University of Leicester | Other | 1 | £11m | 0.1% | 2018-07-13 |
| Salisbury NHS Foundation Trust | Other | 4 | £9m | 0.1% | 2021-06-28 |
| The Princess Alexandra Hospital NHS Trust | Other | 1 | £8m | 0.1% | 2020-03-05 |
| Hull & East Yorkshire Hospitals Nhs Trust | Other | 1 | £7m | 0.1% | 2019-03-07 |
| Procurement for Housing | Other | 1 | £7m | 0.1% | 2018-02-14 |
| Longhurst Group | Other | 2 | £7m | 0.1% | 2019-07-22 |
| Optivo | Other | 4 | £6m | 0.0% | 2019-07-11 |
| Hull University Teaching Hospitals NHS Trust | Other | 1 | £6m | 0.0% | 2019-02-07 |
| Charnwood Borough Council | Other | 4 | £5m | 0.0% | 2020-10-01 |
| East Sussex County CouncilNew | Other | 1 | £5m | 0.0% | 2024-09-19 |
| Brighton and Hove City Council | Other | 1 | £4m | 0.0% | 2020-09-30 |
| Wye Valley NHS Trust | Other | 1 | £4m | 0.0% | 2017-03-27 |
| CIRRUS PURCHASING LTD | Other | 1 | £3m | 0.0% | 2019-12-13 |
| Manchester City Council | Other | 1 | £3m | 0.0% | 2018-12-10 |
| Halton Borough Council | Other | 1 | £2m | 0.0% | 2020-01-10 |
| Hull & East Yorkshire Hopitals NHS Trust | Other | 1 | £2m | 0.0% | 2015-03-26 |
| Stevenage Borough Council | Other | 1 | £2m | 0.0% | 2020-09-24 |
| Inenco Group Ltd | Other | 2 | £2m | 0.0% | 2017-02-04 |
| Bournemouth Christchurch and Poole Council | Other | 1 | £1m | 0.0% | 2020-07-01 |
| Police and Crime Commissioner for Lincolnshire | Other | 5 | £1m | 0.0% | 2025-03-11 |
| Uttlesford District Council | Other | 2 | £1m | 0.0% | 2020-05-05 |
| Nuneaton & Bedworth Borough Council | Other | 1 | £1m | 0.0% | 2020-10-01 |
| Guildford Borough Council | Other | 1 | £967k | 0.0% | 2016-01-08 |
| Places for People Group Ltd | Other | 3 | £866k | 0.0% | 2019-11-26 |
| CORBY BOROUGH COUNCIL | Other | 1 | £707k | 0.0% | 2020-09-30 |
| DERBY HOMES LIMITED | Other | 1 | £680k | 0.0% | 2020-09-15 |
| Oldham Council | Other | 1 | £678k | 0.0% | 2019-09-02 |
| Harborough District Council | Other | 3 | £672k | 0.0% | 2019-08-02 |
| Fylde Borough Council | Other | 2 | £579k | 0.0% | 2021-06-07 |
| Origin Housing Limited | Other | 1 | £571k | 0.0% | 2020-02-17 |
| Stroud District Council | Other | 1 | £515k | 0.0% | 2019-08-22 |
| Gwynedd Council | Other | 1 | £459k | 0.0% | 2020-07-27 |
| Fenland District Council | Other | 1 | £400k | 0.0% | 2016-04-01 |
| RUGBY BOROUGH COUNCIL | Other | 1 | £347k | 0.0% | 2023-03-20 |
| Salvation Army Housing Association | Other | 1 | £275k | 0.0% | 2019-03-13 |
| South Devon College | Other | 1 | £267k | 0.0% | 2016-01-01 |
| LEEDS TRINITY UNIVERSITY | Other | 1 | £235k | 0.0% | 2019-03-15 |
| Wealden District Council | Other | 1 | £155k | 0.0% | 2020-09-16 |
| Places for People Ltd | Other | 1 | £143k | 0.0% | 2020-08-14 |
| Indigo Swan | Other | 1 | £132k | 0.0% | 2017-09-06 |
| Procurement Hub | Other | 2 | £114k | 0.0% | 2023-09-27 |
| UK Hydrographic Office | Other | 1 | £100k | 0.0% | 2023-03-30 |
| Information Commissioner's Office | Other | 1 | £90k | 0.0% | 2018-02-28 |
| British Transport Police | Other | 1 | £84k | 0.0% | 2021-03-12 |
| Chichester District Council | Other | 1 | £75k | 0.0% | 2020-03-03 |
| BIRKBECK COLLEGE | Other | 1 | £69k | 0.0% | 2020-09-25 |
| Rother District Council | Other | 1 | £52k | 0.0% | 2020-09-16 |
| NHS Digital | Other | 1 | £20k | 0.0% | 2020-04-01 |
| RESOLVE ENERGY LTD | Other | 1 | £10k | 0.0% | 2019-08-09 |
| The National Association of School Business Management | Other | 1 | £0k | 0.0% | 2016-08-31 |
| Institute of School Business Leaders | Other | 1 | £0k | 0.0% | 2020-02-26 |