Just had a great few days biking in the Lake District and popped into Bike Treks in Ambleside for old times' sake and it turns out they have a few old Proflex parts lying about - seals, bushes, derailleur hangers, a few odds and sods (half a carrier bag full he said). I asked if it was OK if I mentioned it here and they said fine, so that's what I'm doing. Give them a bell if you need small Proflex parts - you just never know they may have what you need.
http://www.biketreks.net/
http://www.biketreks.net/