Can you help to identify these frames, bikes or parts?

Handsome frames those barchelli's I've seen a couple (or possibly the same one with different curators) recently.
At the back of my mind I thought Barchelli were built by a cycle shop in the UK, no idea where that hunch comes from and I can't find anything to back it up so I'm probably wrong.

This guy here claims his frame was "Roberto Benigni's cousin's mates bike - ridden to victory on numerous occasions in the Italian track league throughout the early eighties"

Mine is the same one as 'Roberto Benini's cousin's mate's bike' I think as they both have the same ding in the top tube. Would be interested to know if that was true