@deQuincey
Update:
Sourced a replacement lock, which was working when pulled out by the wrecker.
Guess what? Doesn't work in my car
I get lights on the dash etc but nothing when it goes to crank position.
Seems to me the issue is with the lug on the back of the lock that engages the nylon bush on the shaft, which in turn allows the mechanism to rotate the shaft to the crank position.
Looking at some of your earlier pictures here almost looks like there are two versions of 'Type B' where one has a longer lug than the other.
Ideas/Help?
Very frustrating as it's stopping me from getting out on the road..