Interfaith Wales: http://www.interfaithwales.org

Member sites

Anguilimala:  http://angulimala.org.uk/
Aro gTér:  http://arobuddhism.org/
Awakened Heart Sangha: http://www.buddhism-connect.org/
Community of Interbeing:  http://interbeing.org.uk/
New Kadampa:  http://kadampa.org/
Order of Buddhist Contemplatives:  http://www.obcon.org/
Samatha Association: http://www.samatha.org/
Soka Gakkai International:  http://www.sgi.org/
Theravada Tradition: http://www.amaravati.org/
Triratna (FWBO):  http://www.fwbo.org/

Other Buddhist sites of interest

Network of Buddhist Organisations:  http://www.nbo.org.uk/
Promotes fellowship and dialogue between Buddhist organisations within the UK and facilitates cooperation in matters of common interest.
The Buddhist Society:   http://www.thebuddhistsociety.org  
Based in central London, the Buddhist Society is one of the oldest Buddhist societies in Europe. It provides courses and classes in the teachings of the major Buddhist traditions.
The Buddhist Channel:  http://www.buddhistchannel.tv/  
Buddhist news from around the world.
Buddhanet:  http://www.buddhanet.net
A source of information about Buddhism from many traditions. Downloadable audio files, ebooks and a directory of Buddhist organisations.
Triple Gem:   http://triplegem.terapad.com 
The Buddhist think tank. 
Tricycle:   http://www.tricycle.com
"The independent voice of Buddhism"  A Buddhist Magazine published in America.  Online version or buy from newsagents.
Journal of Buddhist Ethics:   www.buddhistethics.org
Online magazine.
Treeleaf Zendo: http://www.treeleaf.org
World wide Soto Zen sangha on the internet led by teacher Jundo Cohen.
Throssel Hole Buddhist Abbey: http://www.throssel.org  
 A training monastery in the Order Of Buddhist Contemplatives.
The Clear Vision Trust:   www.clear-vision.org
Buddhist audio-visual materials for schools and young people: DVD, online & interactive.  Please ask about Welsh-medium resources for schools.
Western Chan fellowship:  http://www.westernchanfellowship.org/
Samatha Association:  http://www.samatha.org/
Lam Rim Wales:  http://www.lamrim.org.uk/wales/
Kagyu Samye Dzong, Cardiff:   http://www.meditateinwales.net/
Satipanya Retreat Centre:     http://www.satipanya.org.uk