I think someone has posted about these guys before, but just in case they haven't i will do so now.
These grand folks are a Triumph specialist workshop/breakers in wales. They hold comprehensive stocks of Triumph parts and are MOST helpful.
I have just purchased a new (used) front wheel and matching discs for the very reasonable sum of £250 + VAT, to replace my buggered ones. I have been told they are in very good condition and will confirm this after i've set my mince's on them.
A pleasure to deal with and cheap to boot.
http://www.triumph-ant.co.uk/index.html