Thank you very much, I'm very flattered, although I'd have been nowhere without spares that I could just swap to eliminate suspect bits (or prove that they were faulty). And the discovery of the missing relays was almost pure chance. If I hadn't had to ask about the location of the heated seat relays it would have taken me ages to find the problems!
That reminds me: Credit should go to this forum too - I'd have also been lost without the prompt and friendly assistance that I've received from numerous contributors. It's nice to be able to sort of reward that with a few confirmations that problems have been solved. It closes the loop.
Anyway I promised pics, so here are a few. One of "the fleet" as it currently stands, and a few of the ZS itself. I'm going to stick with the hairpins for now as they are more resistant to kerbing and tyres are cheaper. Also I know the clearance on the exhaust looked a bit tight in the pic from the rear, but I've since opened up the gap between it and the bumper - by standing on it and bouncing up and down a bit! See - I can do brute force and ignorance too!