Hewland F3000 ring and pinions

Does anyone have the contact for the former Peter Smith vintage Hewland gearbox parts. I have a 10/31 10 bolt 3/8 bolts R&P
that was used in the late 80's March F3000 gearbox, probably the 87 and 88 cars for sure. It had 10 bolts vs 8 because of a different gear configuration Ring #4483A, Pinion #4483B that I bought from Peter years ago and it was maybe the last one around. This is brand new. My guess it may have been used in several of the F3000 gearboxes do to the 8500 rpm limit.