Right, found a parts store not too far from me, looked like a washing machine scrap yard
Told the guy what was wrong, he said sounds like the door lock. Bought part for a tenner.
Got back home, fitted the lock part, still not working.
Back to shop. explained again what was wrong, he told me if it isnt the lock, it has to be the door. (failing that, he also gave me a pcb and told me how to change the old one). Bought door for twenty quid.
Got back home, put the door on. The handle is in a different place to the lock so doesnt line up
wrong door.
Back to the shop for a third time, got exact same door, back home fitted it and 'hey presto' washing machine now works!!! Took the whole of Saturday, but missus now thinks im a genius, result