Gomolzig never usefully replied to my query. I just got totally laconic comms – a way of saying “don’t waste our time”. Some German firms simply don’t do business with the UK.
Anyway, I am continuing this saga here which is the same exhaust pipe which initially cracked, was welded up, and then failed more properly a while later.
Peter, I purchase exhaust parts from https://www.aircraftexhaust.com/
Thank you. I emailed them and after a number of emails and pulling teeth managed to extract that they can do this and they will deal with the UK.
So they appear to be another option.
However, AWI do a good job and communicate very well. They also stood behind their name when the 1st pipe didn’t fit, and did the 2nd one with shipping paid.