- Allotts Accountants

- Auburn Ainsley

- BMI Healthcare

- Bolsover District Council

- Bolt Asset Managements

- Cambria Automobiles

- Chesterfield Royal Hospital NHS Foundation Trust

- Derbyshire Constabulary

- Derbyshire Community Health NHS Foundation Trust

- Derbyshire Fire and Rescue Service

- Doncaster & South Humber Healthcare NHS Trust

- Doncaster and Bassetlaw Hospitals NHS Trust

- Duke Street Medical Practice

- Falkland Islands Government

- Focus Consultants

- GPI Healthcare Property Solutions

- Iceni Developments

- Interserve Construction Ltd

- Jarvale Construction Ltd

- Lindum Construction Ltd

- Liminus Group (Huntingdon Housing Partnership)

- Mendip Vale Medical Practice

- NHS Property Services

- North London Property

- Nottingham University Hospitals

- Nottinghamshire Healthcare NHS Trust

- RG Carter 

- Riverdale Grange

- Rotherham Metropolitan Borough Council

- RDASH Mental Health NHS Foundation Trust

- S. & A. Parsons

- Salvation Army

- Sheffield Children's Hospital NHS Foundation Trust

- Sheffield Teaching Hospitals NHS Foundation Trust

- South Holland District Council

- Summers Inman

- Thaxted Medical Practice

- The Hospital Group

- Turner Townsend

- W.O.R.K. Ltd

- Wakefield Health Trust

- Westfield Health

- Wildgoose Construction Ltd

- Woodlands Medical Practice