| HAMPSHIRE COUNTY COUNCIL | South East | 9 | 0 | 8 |
| Sunderland City Council | North East | 7 | 0 | 5 |
| Education Authority | Northern Ireland | 6 | 0 | 5 |
| Ministry of Justice | London | 6 | 0 | 5 |
| the Education Authority | Northern Ireland | 6 | 0 | 6 |
| Lancashire County Council | North West | 5 | 1 | 3 |
| Caerphilly County Borough Council | Wales | 4 | 0 | 1 |
| Durham County Council | North East | 4 | 0 | 4 |
| GLOUCESTERSHIRE HOSPITALS SUBSIDIARY COMPANY LIMITED | South West | 4 | 0 | 4 |
| Leicestershire County Council | East Midlands | 4 | 0 | 4 |
| Anchor Hanover Group | Yorkshire and the Humber | 3 | 0 | 3 |
| Derbyshire County Council | East Midlands | 3 | 0 | 3 |
| East Sussex County Council | South East | 3 | 0 | 2 |
| Foreign, Commonwealth and Development Office | London | 3 | 0 | 3 |
| Glasgow City Council | Scotland | 3 | 0 | 3 |
| Gov Facility Services Ltd | London | 3 | 0 | 3 |
| HUMBER TEACHING NHS FOUNDATION TRUST | Yorkshire and the Humber | 3 | 0 | 3 |
| Leeds City Council | Yorkshire and the Humber | 3 | 0 | 1 |
| London Borough of Havering | London | 3 | 0 | 2 |
| Lothian Health Board | Scotland | 3 | 0 | 1 |
| MHRA | London | 3 | 1 | 2 |
| North East Scotland College | Scotland | 3 | 0 | 0 |
| Rhondda Cynon Taf CBC | Wales | 3 | 0 | 3 |
| The University Caterers Organisation Ltd (TUCO Ltd) | North West | 3 | 0 | 2 |
| Yorkshire Purchasing Organisation | Yorkshire and the Humber | 3 | 0 | 1 |
| Atlantic Technological University | Republic of Ireland | 2 | 0 | 2 |
| Bedford College | East of England | 2 | 0 | 0 |
| Chichester College Group | South East | 2 | 0 | 1 |
| City & County of Swansea | Wales | 2 | 0 | 2 |
| City of Bradford Metropolitan District Council | Yorkshire and the Humber | 2 | 0 | 1 |
| Cwm Taf Morgannwg University Health Board | Wales | 2 | 0 | 2 |
| DN Colleges Group | Yorkshire and the Humber | 2 | 0 | 2 |
| Dumfries and Galloway Council | Scotland | 2 | 0 | 0 |
| East Riding of Yorkshire Council | Yorkshire and the Humber | 2 | 0 | 2 |
| GREENSQUAREACCORD LIMITED | West Midlands | 2 | 0 | 2 |
| HOUSING 21 | West Midlands | 2 | 0 | 2 |
| Irish Defence Forces | Republic of Ireland | 2 | 0 | 1 |
| LEIDOS SUPPLY, LIMITED | South West | 2 | 0 | 0 |
| Mid and West Wales Fire and Rescue Authority | Wales | 2 | 0 | 2 |
| Ministry of Defence | North West | 2 | 0 | 0 |
| NHS Wales Shared Services Partnership-Procurement Services (hosted by Velindre University NHS Trust) | Wales | 2 | 0 | 2 |
| National Oceanography Centre | South East | 2 | 0 | 2 |
| National Paediatric Hospital Development Board | Republic of Ireland | 2 | 0 | 2 |
| North East London NHS Foundation Trust | London | 2 | 0 | 2 |
| Procurement and Logistics Service | Northern Ireland | 2 | 0 | 1 |
| ROTHERHAM DONCASTER AND SOUTH HUMBER NHS FOUNDATION TRUST | Yorkshire and the Humber | 2 | 0 | 2 |
| Redditch Borough Council | West Midlands | 2 | 0 | 1 |
| Royal United Hospitals Bath NHS Foundation Trust | South West | 2 | 0 | 2 |
| Scotland Excel | Scotland | 2 | 0 | 2 |
| Sheffield Teaching Hospitals NHS Foundation Trust | Yorkshire and the Humber | 2 | 0 | 2 |
| Shropshire Council | West Midlands | 2 | 0 | 2 |
| South East Technological University | Republic of Ireland | 2 | 0 | 1 |
| South Tyneside Council | North East | 2 | 0 | 1 |
| THE UNIVERSITY OF BIRMINGHAM | West Midlands | 2 | 0 | 0 |
| The City of Liverpool College | North West | 2 | 0 | 2 |
| The Mayor and Commonalty and Citizens of the City of London | London | 2 | 0 | 2 |
| UNITED LINCOLNSHIRE TEACHING HOSPITALS NHS TRUST | East Midlands | 2 | 0 | 2 |
| UNIVERSITY OF KEELE | West Midlands | 2 | 0 | 2 |
| Activate Learning | South East | 1 | 0 | 1 |
| Arti Biochar Ireland Limited | Republic of Ireland | 1 | 0 | 0 |
| Ashfield District Council | East Midlands | 1 | 0 | 1 |
| Atlas BFW Management Limited | North West | 1 | 0 | 1 |
| BABCOCK INTERNATIONAL GROUP PLC | West Midlands | 1 | 0 | 1 |
| Belfast City Council | Northern Ireland | 1 | 0 | 1 |
| Betsi Cadwaladr University Health Board | Wales | 1 | 0 | 1 |
| Bolton Metropolitan Borough Council | North West | 1 | 0 | 1 |
| Borough of Telford & Wrekin | West Midlands | 1 | 0 | 0 |
| Bradford Teaching Hospitals NHS Foundation Trust | Yorkshire and the Humber | 1 | 0 | 1 |
| Bridgend County Borough Council | Wales | 1 | 0 | 1 |
| Brunelcare | South West | 1 | 0 | 1 |
| Buckingham Palace | London | 1 | 0 | 1 |
| Bus Eireann/Irish Bus | Republic of Ireland | 1 | 0 | 0 |
| Business Services Organisation, Procurement and Logistics Service | Northern Ireland | 1 | 0 | 1 |
| CNES | Scotland | 1 | 0 | 0 |
| Cardiff Metropolitan University | Wales | 1 | 0 | 1 |
| Cardiff University | Wales | 1 | 0 | 1 |
| Cardiff and Vale University Health Board | Wales | 1 | 0 | 1 |
| Cheshire East Borough Council | North West | 1 | 0 | 1 |
| Chesterfield College | Yorkshire and the Humber | 1 | 0 | 1 |
| Choice Services Ireland Limited | Northern Ireland | 1 | 0 | 1 |
| City of Doncaster Council | Yorkshire and the Humber | 1 | 0 | 1 |
| City of Dublin ETB | Republic of Ireland | 1 | 0 | 0 |
| City of Wolverhampton College | West Midlands | 1 | 0 | 1 |
| City of York Council | Yorkshire and the Humber | 1 | 0 | 1 |
| Communities and Housing Investment Consortium Limited | West Midlands | 1 | 1 | 0 |
| Corporate Officer of the House of Commons | London | 1 | 0 | 0 |
| Corporate Officer of the House of Lords | London | 1 | 0 | 0 |
| Council of the Isles of Scilly | South West | 1 | 0 | 1 |
| Coventry University | West Midlands | 1 | 0 | 1 |
| Cumberland Council | North West | 1 | 0 | 1 |
| Cyson Cymru | Wales | 1 | 0 | 1 |
| DERBY HOMES LIMITED | East Midlands | 1 | 0 | 0 |
| Dartmoor Multi Academy Trust (Secondary Acct: PHP Law) | South West | 1 | 0 | 1 |
| Defence Science and Technology Laboratory | South West | 1 | 0 | 1 |
| Department for Energy Security & Net Zero | London | 1 | 0 | 1 |
| Department of Social Protection | Republic of Ireland | 1 | 0 | 0 |
| Dept Social Protection | Republic of Ireland | 1 | 0 | 0 |
| Doncaster Council | Yorkshire and the Humber | 1 | 0 | 1 |
| Dublin and Dun Laoghaire Education and Training Board | Republic of Ireland | 1 | 0 | 0 |
| ESPO | East Midlands | 1 | 0 | 1 |
| East & North Hertfordshire Teaching Hospital NHS Trust | East of England | 1 | 0 | 1 |
| East Riding of Yorkshire | Yorkshire and the Humber | 1 | 0 | 1 |
| East and North Hertfordshire Teaching NHS Trust | East of England | 1 | 0 | 1 |
| Education Authority NI | Northern Ireland | 1 | 0 | 1 |
| Environment Agency | North East | 1 | 0 | 0 |
| Environmental Protection Agency | Republic of Ireland | 1 | 0 | 0 |
| FIRST GREATER WESTERN LIMITED | South West | 1 | 0 | 0 |
| Fife Council | Scotland | 1 | 0 | 1 |
| Garden of Eden Fresh Herbs Ltd | Republic of Ireland | 1 | 0 | 0 |
| Great Baddow Parish Council | East of England | 1 | 0 | 1 |
| Hafod Housing Association | Wales | 1 | 0 | 1 |
| Hampshire and isle of Wight Healthcare NHS Foundation Trust | South East | 1 | 0 | 0 |
| Hanover (Scotland) Housing Association Ltd | Scotland | 1 | 0 | 0 |
| Hartlepool College of Further Education | North East | 1 | 0 | 1 |
| Hertfordshire Partnership University NHS Foundation Trust. | East of England | 1 | 0 | 1 |
| Iarnród Eireann-Irish Rail | Republic of Ireland | 1 | 0 | 0 |
| Isle of Wight | South East | 1 | 0 | 1 |
| Isle of Wight NHS Trust | South East | 1 | 0 | 0 |
| KCC Inactive | Republic of Ireland | 1 | 0 | 1 |
| Kent County Council | South East | 1 | 0 | 1 |
| Kettering General Hospital NHS Foundation Trust | East Midlands | 1 | 0 | 1 |
| LIFECYCLE MANAGEMENT GROUP LIMITED | South East | 1 | 0 | 1 |
| Lancashire Constabulary | North West | 1 | 0 | 1 |
| Lancaster City Council | North West | 1 | 0 | 1 |
| Learning Academy Partnership South West | South West | 1 | 0 | 1 |
| Leeds Beckett University | Yorkshire and the Humber | 1 | 0 | 1 |
| Leeds Teaching Hospitals NHS Trust | Yorkshire and the Humber | 1 | 0 | 1 |
| Leicestershire County Council, trading as ESPO | East Midlands | 1 | 0 | 1 |
| Leidos Supply | South West | 1 | 0 | 0 |
| Lionheart Educational Trust | East Midlands | 1 | 0 | 1 |
| London Borough of Camden | London | 1 | 0 | 1 |
| London Borough of Hillingdon | London | 1 | 0 | 1 |
| Longhurst Group | East of England | 1 | 0 | 1 |
| Loughborough University | East Midlands | 1 | 0 | 1 |
| MERSEY AND WEST LANCASHIRE TEACHING HOSPITALS NHS TRUST | North West | 1 | 0 | 1 |
| MSE Group | East of England | 1 | 0 | 1 |
| Medicines and Healthcare products Regulatory Agency | East of England | 1 | 0 | 1 |
| Met Office | South West | 1 | 0 | 1 |
| Milseogra Agus Bacus Ui Dhonnchadha Teo. | Republic of Ireland | 1 | 0 | 1 |
| Monaghan County Council | Republic of Ireland | 1 | 0 | 0 |
| NHS Shared Business Services Limited | South East | 1 | 0 | 1 |
| NHS Supply Chain | Yorkshire and the Humber | 1 | 0 | 0 |
| NHS Supply Chain operated by North of England Commercial Procurement Collaborative (who are hosted by Leeds and York Partnership NHS Foundation Trust) acting on behalf of Supply Chain Coordination Ltd | Yorkshire and the Humber | 1 | 0 | 0 |
| Newcastle City Council | North East | 1 | 0 | 1 |
| North Northamptonshire Council | East Midlands | 1 | 0 | 0 |
| Northumbria Healthcare Facilities Management | North East | 1 | 0 | 1 |
| Northumbria Healthcare NHS Foundation Trust | North East | 1 | 0 | 1 |
| Nottingham City Council | East Midlands | 1 | 0 | 0 |
| Nuclear Restoration Services Limited | North West | 1 | 0 | 1 |
| Penzance Town Council | South West | 1 | 0 | 1 |
| Police and Crime Commissioner for Gwent | Wales | 1 | 0 | 0 |
| Procurement for Housing | Scotland | 1 | 0 | 1 |
| Renfrewshire Council | Scotland | 1 | 0 | 0 |
| Royal Armouries Museum | Yorkshire and the Humber | 1 | 0 | 1 |
| Royal Holloway and Bedford New College | South East | 1 | 0 | 1 |
| SOMERSET NHS FOUNDATION TRUST | South West | 1 | 0 | 1 |
| ST EDMUND'S COLLEGE CAMBRIDGE | East of England | 1 | 0 | 0 |
| Salford City Council | North West | 1 | 0 | 1 |
| Sandwell Metropolitan Borough Council | West Midlands | 1 | 0 | 1 |
| Scottish Prison Service | Scotland | 1 | 0 | 0 |
| Seán Ó Domhnaill | Republic of Ireland | 1 | 0 | 0 |
| Sheffield Children's NHS Foundation Trust | Yorkshire and the Humber | 1 | 0 | 1 |
| South Tyneside Borough Council | North East | 1 | 0 | 1 |
| St. Vincent's University Hospital | Republic of Ireland | 1 | 0 | 1 |
| St.Ciaran's Mixed National School | Republic of Ireland | 1 | 0 | 0 |
| Staffordshire County Council | West Midlands | 1 | 0 | 1 |
| Sunderland College | North East | 1 | 0 | 1 |
| Supply Chain Coordination Limited | Yorkshire and the Humber | 1 | 0 | 1 |
| Surrey and Borders Partnership NHS Foundation Trust | South East | 1 | 0 | 1 |
| THE UNIVERSITY CATERERS ORGANISATION LIMITED | North West | 1 | 0 | 0 |
| THIRTEEN HOUSING GROUP LIMITED | North East | 1 | 0 | 1 |
| TUCO Ltd | North West | 1 | 0 | 1 |
| Technological University Dublin (TU Dublin) | Republic of Ireland | 1 | 0 | 0 |
| Telford & Wrekin Council | West Midlands | 1 | 0 | 1 |
| The Association of North East Councils Limited | North East | 1 | 0 | 1 |
| The Mayor's Office for Policing And Crime | London | 1 | 0 | 0 |
| The North Yorkshire Council | Yorkshire and the Humber | 1 | 0 | 1 |
| The Northern Ireland Prison Service | Northern Ireland | 1 | 0 | 1 |
| The Office of Government Procurement | Republic of Ireland | 1 | 0 | 1 |
| The Princess Alexandra Hospital NHS Trust | East of England | 1 | 0 | 1 |
| The Queen Elizabeth Hospital King's Lynn NHS Foundation Trust | East of England | 1 | 0 | 1 |
| The University Of Kent | South East | 1 | 0 | 1 |
| The University of Nottingham | East Midlands | 1 | 0 | 1 |
| Transport for Wales | Wales | 1 | 0 | 0 |
| Transport for Wales (TFW) | Wales | 1 | 0 | 1 |
| UK Research & Innovation (UKRI) | South West | 1 | 0 | 1 |
| UK Research and Innovation | South West | 1 | 0 | 1 |
| UNIVERSITY HOSPITALS OF DERBY AND BURTON NHS FOUNDATION TRUST | East Midlands | 1 | 0 | 1 |
| UNIVERSITY OF YORK | Yorkshire and the Humber | 1 | 0 | 1 |
| United Lincolnshire Hospital NHS Trust | East Midlands | 1 | 0 | 1 |
| United Lincolnshire Hospitals NHS Trust | East Midlands | 1 | 0 | 1 |
| University College Dublin ( UCD ) | Republic of Ireland | 1 | 0 | 1 |
| University Hospitals of Leicester NHS Trust | East Midlands | 1 | 0 | 1 |
| University of Dundee | Scotland | 1 | 0 | 1 |
| University of Galway (ID 1400) | Republic of Ireland | 1 | 0 | 1 |
| University of Glasgow | Scotland | 1 | 0 | 0 |
| University of South Wales | Wales | 1 | 0 | 1 |
| Velindre University NHS Trust | Wales | 1 | 0 | 1 |
| Walsall Metro Borough Council | West Midlands | 1 | 0 | 1 |
| Warrington & Halton Hospital | North West | 1 | 0 | 1 |
| West Dunbartonshire Council | Scotland | 1 | 0 | 1 |
| West Kent Housing Association | South East | 1 | 0 | 1 |
| West London College | London | 1 | 0 | 0 |
| Westmorland and Furness Council | North West | 1 | 0 | 1 |
| Wirral Council | North West | 1 | 0 | 1 |
| Woking Borough Council | South East | 1 | 0 | 1 |
| Wokingham Borough Council | South East | 1 | 0 | 1 |
| Wrexham University | Wales | 1 | 0 | 0 |
| Wychavon District Council | West Midlands | 1 | 0 | 1 |
| YPO | Yorkshire and the Humber | 1 | 0 | 1 |
| York and Scarborough Teaching Hospitals NHS Foundation Trust | Yorkshire and the Humber | 1 | 0 | 1 |