Association for Conservation of Energy
Association of Residential Lettings Agents
Building Societies Association
Carbon Trust
Climate Change Committee
Department of Energy and Climate Change
Department of Communities and Local Government
Energy Efficiency Partnership for Homes
Existing Homes Alliance
Federation of Master Builders
Forum for the Future
Local Government Association
National Association of Estate Agents
National Energy Action
National Energy Services
National Home Improvement Council
National Landlords Association
National Insulation Association
Prince's Mayday Network
Property & Energy Professionals Association
UK Green Building Council
World Wildlife Fund