| Department for Transport | Other | 3 | £38m | 23.3% | 2020-02-25 |
| Crown Commercial Service | Other | 3 | £37m | 22.9% | 2021-03-26 |
| Places for People Group | Other | 2 | £21m | 13.0% | 2019-11-29 |
| UKROEd Ltd | Other | 1 | £13m | 7.8% | 2020-06-01 |
| Greater Manchester Mental Health NHS Foundation Trust | Other | 1 | £10m | 6.2% | 2020-12-02 |
| Bristol City Council | Other | 3 | £5m | 3.2% | 2021-03-19 |
| BANK OF ENGLAND | Other | 1 | £4m | 2.6% | 2019-10-29 |
| Home Office | Other | 4 | £3m | 1.8% | 2020-06-25 |
| Hampshire County Council | Other | 5 | £3m | 1.7% | 2021-03-16 |
| Espo | Other | 1 | £2m | 1.4% | 2019-11-18 |
| DEFRA | Other | 4 | £2m | 1.3% | 2021-04-01 |
| Brighton and Hove City Council | Other | 5 | £1m | 0.9% | 2021-02-21 |
| Liverpool City Council | Other | 3 | £1m | 0.7% | 2020-11-27 |
| Trafford Council | Other | 1 | £1m | 0.7% | 2019-05-11 |
| Warrington Borough Council | Other | 2 | £1m | 0.7% | 2020-03-05 |
| West Kent Housing Association Ltd | Other | 2 | £1m | 0.7% | 2021-03-31 |
| YPO | Other | 1 | £1m | 0.6% | 2020-08-19 |
| Durham County Council | Other | 2 | £971k | 0.6% | 2020-05-28 |
| Hertfordshire NHS Procurement | Other | 3 | £843k | 0.5% | 2021-03-22 |
| Cabinet Office | Other | 1 | £805k | 0.5% | 2019-10-24 |
| Rotherham Metropolitan Borough Council | Other | 4 | £787k | 0.5% | 2020-06-26 |
| London Borough of Hackney | Other | 3 | £757k | 0.5% | 2020-09-23 |
| Railway Housing Association | Other | 1 | £641k | 0.4% | 2020-05-13 |
| Bournemouth Christchurch and Poole Council | Other | 5 | £597k | 0.4% | 2021-04-12 |
| Bradford Metropolitan District Council | Other | 2 | £566k | 0.4% | 2020-03-09 |
| Uttlesford District Council | Other | 2 | £563k | 0.3% | 2020-02-14 |
| Oxford City Council | Other | 1 | £546k | 0.3% | 2020-09-29 |
| Foreign Commonwealth and Development Office | Other | 1 | £530k | 0.3% | 2020-12-15 |
| HM Revenue & Customs | Other | 1 | £511k | 0.3% | 2019-12-11 |
| Hull City Council | Other | 1 | £477k | 0.3% | 2020-12-16 |
| Lincolnshire County Council | Other | 1 | £475k | 0.3% | 2020-05-29 |
| City of London Corporation | Other | 1 | £404k | 0.3% | 2019-07-01 |
| One Housing Group | Other | 1 | £387k | 0.2% | 2020-10-29 |
| North Yorkshire County Council | Other | 4 | £371k | 0.2% | 2021-04-15 |
| Torbay Council | Other | 2 | £349k | 0.2% | 2019-04-09 |
| Ministry of Defence | Other | 2 | £346k | 0.2% | 2020-10-02 |
| Derbyshire County Council | Other | 2 | £341k | 0.2% | 2021-01-19 |
| Rotherham MBC | Other | 1 | £341k | 0.2% | 2020-01-23 |
| Gateshead Council | Other | 1 | £304k | 0.2% | 2019-09-13 |
| Lichfield District Council | Other | 1 | £290k | 0.2% | 2020-09-30 |
| Blackpool Council | Other | 1 | £290k | 0.2% | 2017-08-31 |
| Southampton City Council | Other | 2 | £217k | 0.1% | 2019-08-30 |
| Supply Hertfordshire | Other | 1 | £200k | 0.1% | 2020-09-01 |
| North Devon District Council | Other | 1 | £198k | 0.1% | 2017-09-27 |
| Bath and North East Somerset Council | Other | 1 | £198k | 0.1% | 2020-11-30 |
| Barnsley Metropolitan Borough Council | Other | 2 | £185k | 0.1% | 2021-02-16 |
| Devon County Council | Other | 1 | £174k | 0.1% | 2019-09-26 |
| ST HELENS & KNOWSLEY TEACHING HOSPITALS NHS TRUST | Other | 2 | £154k | 0.1% | 2020-06-29 |
| Isle of Wight Council | Other | 1 | £148k | 0.1% | 2020-02-20 |
| Star Procurement | Other | 2 | £147k | 0.1% | 2019-07-31 |
| Somerset County Council | Other | 1 | £142k | 0.1% | 2020-09-01 |
| oneSource | Other | 1 | £132k | 0.1% | 2020-11-01 |
| Torbay Council - Childrens Services | Other | 2 | £128k | 0.1% | 2017-08-31 |
| Ministry of Housing, Communities & Local Government | Other | 2 | £128k | 0.1% | 2020-12-03 |
| Thanet District Council | Other | 2 | £128k | 0.1% | 2021-02-15 |
| LGSS | Other | 1 | £117k | 0.1% | 2020-12-08 |
| Shared Procurement Service | Other | 1 | £113k | 0.1% | 2020-12-17 |
| Anglia Ruskin University | Other | 2 | £112k | 0.1% | 2019-04-12 |
| Harborough District Council | Other | 1 | £102k | 0.1% | 2019-08-30 |
| UNIVERSITY OF SOUTHAMPTON | Other | 1 | £101k | 0.1% | 2020-07-16 |
| National Institute for Health and Care Excellence | Other | 1 | £99k | 0.1% | 2021-01-25 |
| Humberside Fire and Rescue Service | Other | 3 | £99k | 0.1% | 2020-10-31 |
| Department for Education | Other | 2 | £98k | 0.1% | 2020-04-01 |
| Sunderland City Council | Other | 1 | £93k | 0.1% | 2020-06-23 |
| Nottingham City Council | Other | 1 | £91k | 0.1% | 2020-09-01 |
| Hospital Radio Hillingdon | Other | 2 | £76k | 0.0% | 2020-05-01 |
| Folkestone and Hythe District Council | Other | 1 | £74k | 0.0% | 2019-11-22 |
| Kent Community Health NHS Foundation Trust | Other | 1 | £72k | 0.0% | 2021-03-25 |
| Melton Borough Council | Other | 1 | £66k | 0.0% | 2020-02-13 |
| Public Health England | Other | 2 | £66k | 0.0% | 2020-10-15 |
| James Paget University Hospitals NHS Foundation Trust | Other | 1 | £60k | 0.0% | 2019-04-22 |
| Wolverhampton City Council | Other | 1 | £58k | 0.0% | 2020-05-27 |
| NHS Shared Business Services (SBS) | Other | 1 | £57k | 0.0% | 2020-03-16 |
| District Council of Tandridge | Other | 1 | £57k | 0.0% | 2020-05-04 |
| COLLEGE OF POLICING LIMITED | Other | 1 | £55k | 0.0% | 2019-10-25 |
| West Yorkshire Fire & Rescue | Other | 1 | £53k | 0.0% | 2020-11-27 |
| Sussex Community NHS Trust | Other | 1 | £52k | 0.0% | 2020-03-09 |
| Warwickshire Police | Other | 1 | £50k | 0.0% | 2020-04-21 |
| Kirklees Council | Other | 1 | £48k | 0.0% | 2020-10-27 |
| Warwickshire County Council | Other | 1 | £48k | 0.0% | 2019-07-11 |
| NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT | Other | 1 | £47k | 0.0% | 2021-02-11 |
| 5 Councils Partnership | Other | 1 | £39k | 0.0% | 2019-04-01 |
| Redcar and Cleveland Borough Council | Other | 1 | £39k | 0.0% | 2021-01-25 |
| The Hillingdon Hospitals NHS Foundation Trust | Other | 1 | £38k | 0.0% | 2020-05-01 |
| North East Lincolnshire Council | Other | 1 | £35k | 0.0% | 2020-08-03 |
| Buckinghamshire Council | Other | 1 | £33k | 0.0% | 2020-02-28 |
| Health Education England | Other | 1 | £28k | 0.0% | 2021-03-29 |
| London Borough of Barking and Dagenham | Other | 1 | £28k | 0.0% | 2020-04-28 |
| County Durham and Darlington NHS Foundation Trust | Other | 1 | £28k | 0.0% | 2020-05-12 |
| Tyne and Wear Passenger Transport Executive T/A Nexus | Other | 1 | £20k | 0.0% | 2020-09-07 |
| Merseyside Fire & Rescue Service | Other | 1 | £16k | 0.0% | 2020-12-22 |
| Walsall Healthcare NHS Trust | Other | 1 | £14k | 0.0% | 2021-03-30 |
| North West Ambulance Service N H S Trust | Other | 1 | £0k | 0.0% | 2020-01-16 |
| Scottish Police Authority | Other | 1 | £0k | 0.0% | |
| East Hampshire District Council | Other | 1 | £0k | 0.0% | |
| Stockport Homes Ltd | Other | 1 | £0k | 0.0% | |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Other | 1 | £0k | 0.0% | |
| West London NHS Trust | Other | 1 | £0k | 0.0% | |
| NHS London Procurement Partnership | Other | 1 | £0k | 0.0% | |
| Paradigm Housing Group | Other | 1 | £0k | 0.0% | |
| Qualifications Wales | Other | 1 | £0k | 0.0% | |