British Plumbers Employers Council (Training Ltd.) - The British Plumbing Employers Council (Training) Ltd is recognised by government as the National Training Organisation (NTO) for the plumbing and heating industry in the United Kingdom.
Copper Development Association UK - for Information on Copper & Copper Alloys
Institute of Plumbing, The - The Institute of Plumbing is the UK's professional body for plumbers and others in the plumbing industry
National Contractor Referral Glossary of Construction Terms - The Glossary of Construction Terms is provided by the National/California Contractor Referral and License Bureau. Topics include carpentry, concrete, electrical, excavation, glazing, heating and air conditioning, insulation, masonry, painting, plaster, plumbing, roofing, and solar.
Plumbing Web - PlumbingWeb.com is dedicated strictly to the plumbing industry.
The site claims to have links to "the best selection of plumbing related sites on the World Wide Web".
UK Copper Board Website - Established in 1993, the UK Copper Board is part of a European campaign which aims to promote the benefits of copper plumbing and heating systems to the construction industry.

Links checked 24-08-09