Doug, Balls Pond Road had quite a few shops along it Paris, Condor's which everyone forgets and Kamps, are three which come to mind. Was his name Bernie Kamp this seems to ring a bell, not a bloody big Chalice but a small time trial one! Oh if you include Kingsland road just around the corner there was Waller's as well. This part of London was a real haven in the 50's and 60's for frame builders.
Thats all for now. Keep those wheels spinning, in your memories if not still on the road. Be lucky Mick Butler Huntingdon UK.