| Procurement for Housing | Other | 11 | £60m | 60.3% | 2026-01-30 |
| Transport for London | Other | 1 | £27m | 27.2% | 2017-05-01 |
| Warrington Borough Council | Other | 1 | £5m | 4.5% | 2018-06-07 |
| Flagship Housing Group | Other | 2 | £3m | 2.6% | 2022-09-16 |
| Ministry of Housing, Communities & Local Government | Other | 2 | £895k | 0.9% | 2020-05-15 |
| THE GUINNESS PARTNERSHIP LIMITED | Other | 1 | £549k | 0.6% | 2018-12-15 |
| Hertfordshire NHS Procurement | Other | 1 | £400k | 0.4% | 2020-04-03 |
| Greater Manchester Mental Health NHS Foundation Trust | Other | 1 | £380k | 0.4% | 2022-05-31 |
| Public Health England | Other | 1 | £285k | 0.3% | 2020-10-01 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 1 | £270k | 0.3% | 2018-09-18 |
| Middlesbrough Council | Other | 2 | £236k | 0.2% | 2021-12-01 |
| Connexus Homes Limited | Other | 3 | £190k | 0.2% | 2021-08-23 |
| Manchester City Council | Other | 1 | £185k | 0.2% | 2019-06-17 |
| Southend University Hospital NHS Foundation Trust | Other | 1 | £176k | 0.2% | 2019-10-30 |
| City of Wolverhampton Council | Other | 1 | £174k | 0.2% | 2019-02-08 |
| Stevenage Borough Council | Other | 1 | £140k | 0.1% | 2021-01-25 |
| Darlington Borough Council | Other | 1 | £136k | 0.1% | 2019-06-12 |
| Charnwood Borough Council | Other | 1 | £134k | 0.1% | 2018-11-19 |
| Kent Fire & Rescue Service | Other | 1 | £110k | 0.1% | 2017-11-22 |
| Bristol City Council | Other | 1 | £100k | 0.1% | 2019-07-26 |
| Yorkshire Purchasing Organisation | Other | 1 | £83k | 0.1% | 2018-01-16 |
| NHS South West - Acutes | Other | 1 | £72k | 0.1% | 2019-06-14 |
| High Peak Borough Council & Staffordshire Moorlands District CouncilNew | Other | 1 | £70k | 0.1% | 2025-10-01 |
| Leicestershire County Council | Other | 1 | £70k | 0.1% | 2020-03-30 |
| London Ambulance Service NHS Trust | Other | 1 | £68k | 0.1% | 2022-02-07 |
| FCDO Services | Other | 2 | £62k | 0.1% | 2019-08-28 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 1 | £59k | 0.1% | 2019-07-17 |
| United Lincolnshire Hospitals NHS Trust | Other | 1 | £57k | 0.1% | 2024-01-03 |
| Met Office | Other | 2 | £55k | 0.1% | 2020-12-17 |
| Ministry of Defence, C&C, Other | Other | 1 | £51k | 0.1% | 2018-03-29 |
| Intellectual Property OfficeNew | Other | 2 | £50k | 0.1% | 2026-02-04 |
| North Lincolnshire Council | Other | 1 | £43k | 0.0% | 2022-10-31 |
| English Heritage | Other | 1 | £40k | 0.0% | 2016-09-27 |
| Salvation Army Housing Association | Other | 1 | £35k | 0.0% | 2021-07-30 |
| The Coal Authority | Other | 1 | £25k | 0.0% | 2019-07-04 |
| ST HELENS & KNOWSLEY TEACHING HOSPITALS NHS TRUST | Other | 1 | £25k | 0.0% | 2017-09-18 |
| NHS Shared Business Services (SBS) | Other | 1 | £1k | 0.0% | 2020-06-25 |
| City of London Corporation | Other | 1 | £0k | 0.0% | 2017-04-12 |
| Lincolnshire Housing Partnership | Other | 1 | £0k | 0.0% | |
| South Western Ambulance Service NHS Foundation Trust | Other | 2 | £0k | 0.0% | |
| Ministry of Defence | Other | 2 | £0k | 0.0% | |
| Aspire Housing | Other | 2 | £0k | 0.0% | |
| Public Sector | Other | 4 | £0k | 0.0% | |