Alwoodley Golf Club
Antler Homes
Arncliffe Homes Ltd
Barratt York, Leeds and Sheffield 
Bellway Homes
Bettys & Taylors Group
Bovis Homes
Cala Homes
Camerons Brewery Co
Carillion Housing
Central Science Laboratory (DEFRA)
Charles Church Developments
City of York Council
Crest Nicholson Residential
Crosby Homes
Dunelm Castle Homes
East Riding of Yorkshire Council
Fairclough Homes
George Wimpey plc
Havelok Housing Association
Leeds Partnership Homes
Linpac Plastics
Lovell Partnership
Marshalls plc
Minton Group
Morbaine Ltd
National House Builders Council
National Railway Museum
Nestle UK Ltd
Nixon Homes
North Yorkshire County Council
Persimmon Homes
Shepherd Design and Shepherd Homes
Taylor Woodrow Developments Ltd
David Wilson Homes
Wild Bennett Homes
Wm Birch & Sons
Yorkshire Housing Association
Yuill Homes