Architects Registration Board – www.arb.org.uk
Association of Chimney Sweeps – www.niacs.co.uk
Association of Consulting Engineers – www.acenet.co.uk
Association of Lead Contractors – www.leadcontractorsassociation.com
Building Limes Forum Trust – www.buildingslimesforumireland.com
Construction Industry Training Board – www.citbcsni.org.uk
Crafts Council of Ireland – www.citbcsni.org.uk
Directory of Bricks – www.brickdirectory.co.uk
Engineers Ireland – www.engineersireland.ie
Heritage Council – www.heritagecouncil.ie
Heritage Lottery Fund – www.hlf.org.uk
Historic Scotland Technical Conservation Group – https://www.conservation.historic-scotland.gov.uk
ICOMOS – www.icomos-uk.org
Irish Georgian Society – www.igs.ie
Monuments and Buildings Record – www.doeni.gov.uk/niea/MBR
Northern Ireland Environment Agency – www.doeni.gov.uk/niea
Northern Ireland Housing Executive – www.nihe.gov.uk
Royal Institue of British Architects – www.architecture.com
Royal Society of Ulster Architects – www.rsua.org.uk
Society for the Protection of Ancient Buildings – www.spab.org.uk
Scottish Lime Centre Trust – www.scotlime.org
Ulster Historic Churches Trust – www.ulsterhistoricchurches.org