- Abney Park Trust
- Aura Wales
- Axis PED
- The Banks Group
- Basingstoke and Deane Borough Council
- Blackburn with Darwen Borough Council
- Brock Plc
- Cadwyn Clwyd
- Chambers Conservation Architects
- City of London Corporation
- City of Westminster
- Cheshire East
- Cheshire West and Cheshire
- Chester University
- Clywd Alyn Housing Association
- Commonwealth War Graves Commission
- Copeland Borough Council
- Cyngor Gwynedd Council
- D.Morgan Plc
- Denbighshire County Council
- Eryri National Park
- First Choice Housing
- Flintshire County Council
- Frodsham Town Council
- Greater Manchester Groundwork
- Groundwork London
- Groundwork Northwest of England
- Gwrych Castle Preservation Trust
- Heritage Initiatives
- Holyhead Town Council
- Holywell Town Council
- ICCM (Institute of Cemetery and Crematorium Management)
- Iverde
- Irk Valley Partnership
- Islington Borough Council
- JPH architects
- Kettering Borough Council
- LEDNET (London Environmental Directors Network)
- Lambeth Council
- Lincoln City Council
- Llannon Community Council
- Manchester City Council
- Maray Properties Limited
- Menter Ty’n Llan
- Mold Town Council
- Moneysupermarket.com
- Natural Resources Wales
- Newport Town Council
- North East Wales Wildlife Limited
- Northern Counties Housing Association
- Northwards Housing
- Opus International
- Parkway Green Housing Trust
- Pembrokeshire County Council
- Pennaf Housing Association
- Preston City Council
- RNLI
- Royal Haskoning
- St Helens Borough Council
- Sheffield CityCouncil
- Smurfit Kappa
- South Staffordshire Council
- Southwark Council
- Southway Housing Association
- The Friends of St Peter Rectory Lane
- Wakefield Council
- Warwick Council
- Wrexham County Borough Council
- Ynys Môn
- YGC
