General
- All Party Parliamentary Group - War Heritage
- Battlefield Tours
- The Battlefields Trust
- British Army
- Cadw
- Churchcare (formerly Council for the Care of Churches)
- Churches Conservation Trust
- Commonwealth War Graves Commission
- Department for Culture, Media and Sport Memorial Grant Scheme
- English Heritage
- Forces Reunited
- Friends of Friendless Churches
- Heritage Link
- Historic Chapels Trust
- Historic Scotland
- Imperial War Museum
- International Brigade Memorial Trust (Spanish Civil War)
- Leger Holidays Battlefield Tours
- The long, long trail: the British Army of 1914 - 1918
- Mausolea and Monuments Trust
- Memorial Arts Charity
- Military Archive Research
- Ministry of Defence
- National Archives (formerly Public Records Office)
- National Army Museum
- National Churches Trust
- National Memorial Arboretum
- Naval and Military Press
- Naval History
- Northern Ireland Environment Agency
- Pen and Sword Publications
- Public Monuments and Sculpture Association
- Roll of Honour
- Royal Air Force
- Royal British Legion
- Royal British Legion Scotland
- Royal Mail Group war memorials database
- Royal Navy
- Save Britains Heritage
- Service Personnel and Veterans Agency
- Twentieth Century Society
- UK National Inventory of War Memorials
- Victorian Society
- Western Front Association
