And Stuarty I connected via jump-leads my pickup to OHs’ Corsa to no avail when starting so ruled out battery..was this right?
Not necessarily. Think of a dead battery as being basically ballast. Though I’m guessing your pickup will have a decent amount of poke. Engine running when you tried to jump it?
Starter clicking for motorbikes means low battery. But I don’t know if the same applies for your car. Do lights dim when you try to turn it over?
TBH I echo TrekEX8… You’ve already thrown money and time at a dead end, it wasn’t a bad conclusion but it was still a stab in the dark. Get the pros in before you make any more