Many thanks for all the explanations on how to spot a Gillott or Rotrax minus it's headbadge or transfers. I am afraid I am still an agnostic on this one as they both used similar propriety lugs. Because of this I would have thought it would make identity extremely difficult if not impossible, surely the only certain way is by their frame numbering sequences. Regarding Gillott taper tubes there was a Welwyn Wheelers fellow who used to ride a a very small taper tube frame at Gosling in the early 60's, ring any bells.
Thats all for now. Keep those wheels spinning, in your memories if not still on the road. Be lucky Mick Butler Huntingdon UK.