The 1901 census for England and Wales
    The Ancient Monuments Society
    The Architectural Heritage Fund
    The Bat Conservation Trust
    Bricks and Brass
    The British Association for Local History
    British-Stone
    The British Sundial Society
    Building Conservation
    Casa Carotonto
    c20fires
    The Chapels Society
    The Church Monuments Society
    The Churches Conservation Trust
    The Cinema Theatre Association
    The Civic Trust
    The Construction History Society
    CORGI
    The Council for British Archaeology
    The Crown Estate
    Dampbuster
    DIY Sash Windows
    The Dry Stone Walling Association.
    English Heritage
    The Environment and Heritage Service Northern Ireland
    The Electrical Contractors Association Limited
    The Eynsham Community Website
    The Family Records Centre
    The Federation of Family History Societies
    The Federation of Master Builders
    The Friends of Friendless Churches
    Floodskirt
    The Garden History Society
    The Gas Safe Register
    The Georgian Group
    Heritage Information
    HETAS
    The Historic Houses Association
    Historic Scotland
    The Historical Manuscripts Commission (ARCHON)
    Home Sources
    Hotline Chimneys
    HSE
    Images of England
    The Institute of Historic Building Conservation (IHBC)
    The Institute of Plumbing
    Islip.org.uk
    John Bell Surveyors and Valuers Ltd (Norfolk)
    The Landmark Trust
    Lease Advice
    The Letter Box Study Group
    The Listed Property Owners Club
    Looking at Buildings
    Mill-rise
    Michael Roberts Chartered Surveyors
    MOD (Ministry of Defence) Defence Estates
    The National Association of Almshouses
    The National Federation of Roofing Contractors
    The National Trust
    The National Waterways Museum
    Naturenet
    The National Fireplace Association
    OFTEC
    Period Property
    Photographs of West Pier, Brighton
    Pictures of England
    Property Care
    The Public Monuments and Sculpture Association
    The Royal Institute of British Architects
    The Royal Photographic Society
    Salvo
    Save Britains Heritage
    The Society for the Protection of Ancient Buildings
    The Society of Genealogists
    Stonehouse Basements
    Stonehouse damp and timber treatments
    Survey of the Jewish Built Heritage in the UK and Ireland
    Thatch
    The Twentieth Century Society
    UK Surveyors and Valuers
    The Victorian Society
    Windmill World
    The Wood Protection Association