| HM Land Registry | Plymouth | 12 | 148 |
| Lancashire Constabulary | Preston | 8 | 81 |
| NHS Digital | Leeds | 5 | 82 |
| NHS Shared Business Services | Salford | 4 | 294 |
| Blood Services South West | Bristol | 4 | 19 |
| FCO Services | Milton Keynes | 3 | 790 |
| NHS South Central & West CSU | Bristol, High Wycombe | 3 | 109 |
| Intellectual Property Office | Newport | 3 | 52 |
| NEL CSU | London | 3 | 50 |
| British Transport Police | London | 3 | 5 |
| Leeds City Council | Leeds | 2 | 764 |
| Hampshire County Council | Winchester | 2 | 254 |
| Bournemouth Christchurch & Poole Council | Bournemouth | 2 | 193 |
| Bath & North East Somerset Council | Bath | 2 | 127 |
| Newcastle City Council | Newcastle upon Tyne | 2 | 108 |
| Student Loans | Glasgow | 2 | 68 |
| CPS | London | 2 | 51 |
| Norfolk Constabulary | Wymondham | 2 | 31 |
| National Audit Office | London | 2 | 24 |
| Warwickshire Police | Warwickshire | 2 | 17 |
| Yorkshire & Humber Police Procurement | Sheffield | 2 | 8 |
| Southern Universities Purchasing Consortium | Reading | 2 | 18 |
| Highways England | Guildford | 1 | 794 |
| Home Office | London | 1 | 478 |
| Department for Transport | Guildford | 1 | 435 |
| Department for Education | London | 1 | 376 |
| Nottinghamshire County Council | Nottingham | 1 | 309 |
| Department for Work & Pensions | Blackpool | 1 | 282 |
| Derbyshire County Council | Matlock | 1 | 260 |
| Crown Commercial Service | Liverpool | 1 | 270 |
| HM Revenue & Customs | Salford | 1 | 192 |
| Sunderland City Council | Sunderland | 1 | 196 |
| West of England University | Bristol | 1 | 163 |
| Queen Elizabeth Hospital Kings Lynn NHS Trust | Kings Lynn | 1 | 157 |
| YPO | Wakefield | 1 | 151 |
| Department for International Trade | London | 1 | 146 |
| Doncaster MBC | Doncaster | 1 | 132 |
| Cambridgeshire County Council | Cambridge | 1 | 127 |
| National Archives | Richmond | 1 | 112 |
| Business Energy & Industrial Strategy | London | 1 | 99 |
| Hertfordshire NHS Procurement | Welwyn Garden City | 1 | 91 |
| Rotherham Metropolitan Borough Council | Rotherham | 1 | 73 |
| Crescent Purchasing Consortium | Manchester | 1 | 62 |
| Crown Commercial Service Cabinet Office | Liverpool | 1 | 51 |
| South Yorkshire Police Headquarters | Sheffield | 1 | 50 |
| Government Digital Service | London | 1 | 50 |
| Thames Valley Police | Kidlington | 1 | 39 |
| Stevenage Borough Council | Stevenage | 1 | 36 |
| Police & Crime Commissioner for Cheshire | Cheshire | 1 | 34 |
| Birmingham Childrens Hospital | Birmingham | 1 | 33 |
| Insolvency Service | London | 1 | 32 |
| Caerphilly County Borough Council | Hengoed | 1 | 33 |
| European Centre for Medium Range Weather Forecasts Ecmwf | Reading | 1 | 26 |
| Walsall Metropolitan Borough Council | Walsall | 1 | 26 |
| Sanctuary Housing Association | Worcester | 1 | 24 |
| Hull University | Hull | 1 | 20 |
| Pension Protection Fund | Croydon | 1 | 19 |
| College of Policing | Harrogate | 1 | 17 |
| Serious Fraud Office | London | 1 | 6 |
| Companies House | Cardiff | 1 | 5 |
| Police Fire & Crime Commissioner for Northamptonshire | Northampton | 1 | 1 |
| NHS Shared Business Services & North of England Commercial Procurement Collaborative | Salford and Sheffield | 1 | 1 |
| Student Loan | Glasgow | 1 | 1 |
| Essex Police | Chelmsford | 1 | 1 |
| Advisory Conciliation & Arbitration Service | London | 1 | 1 |
| Doncaster College | Doncaster | 1 | 1 |
| Walsall Healthcare NHS Trust | Walsall | 1 | 1 |
| Pensions Regulator | Brighton | 1 | 1 |