[MENTION=468444]Art1st[/MENTION], one thought and I saw a brief mention of the American equivalent, a "bike jumble" over there is a good place to sell many of the bikes and parts to folks looking for vintage stuff and complete bikes. If you go to the UK Classic Lightweights website these come up frequently, Peter usually lists some in his news letters.
http://www.classiclightweights.co.uk/index.html
Also, Veteran-Cycle Club
http://www.v-cc.org.uk
I hope that any of the things I offered up are helpful, my best to your brother and his rehab.
Bill