Glass and Glazing Federation - http://www.ggf.org.uk/

British Board of Agrément (BBA) - http://www.bbacerts.co.uk/

British Plastics Federation (BPF) - http://www.bpf.co.uk/

British Woodworking Federation (BWF) - http://www.bwf.org.uk/

Council for Aluminium in Building - http://www.c-a-b.org.uk/

LABC Services - http://www.labc-services.co.uk/

For further information on Building Regulations and downloadable copies - http://www.odpm.gov.uk/

Steel Window Association (SWA) - http://www.steel-window-association.co.uk/

Trading Standards - http://www.tradingstandards.gov.uk/