salopian - thanks for input. I think the gun actually is a Fabbri but Yaerdley didn't review it. It was a non-review article that discussed the Fabbri enterprise and I cannot find it now.
Yardley's review of the Hesketh is at
http://www.thefield.co.uk/gunreviews/528960/Longthorne_Hesketh_OverandUnder_Sidelock.htmlThe Fabbri article pointed out that you can't just copy parts of a H&H using CNC and snap them together - one has to design the gun for this type of manufacture. And that is hugely expensive.