www.psa.org.uk - Productions Services Association
www.abtt.co.uk - The Association of British Theatre Technicians is a charity and a company limited by the guarantee of its members
www.esta.org - Non-profit trade association representing the North American entertainment technology industry.
www.plasa.org - PLASA is the lead international membership body for those who supply technologies and services to the event, entertainment and installation industries.
www.theatredesign.org.uk - Registry of set, costume, and lighting designers, including agent information and selected images of past design work.
www.leea.co.uk - The Lifting Equipment Engineers Association (LEEA) is established across the globe as the leading representative body for all those involved in the lifting industry worldwide.
www.dbicorporation.com - This web page lists the nominal voltages and frequencies, power plugs, and languages used in residences and commercial sites in some 200 countries worldwide.
Health and Safety Consultants
www.stagesafe.co.uk - Advice and training services for the live music, entertainment and event production industries.
www.blue-room.org.uk - Theatre forums with large archive of technical questions. Many different categories, stagecraft, technical, props.
Production Industry News Websites
www.etnow.com - Entertainment technology news on the web.
www.lsionline.co.uk - The online home of Lighting & Sound International - the entertainment technology monthly.
www.usedtruss.com - Used Truss carry a large selection of new and used truss along with associated rigging gear.