Yes SD, I'm back, been extremely busy! Hope your X is doing ok!

Nik, yes it was a bad connection. I had a look last night and pulled the unit out of the door and had a look at the pins and wiring, which looked as though there was nothing wrong with either. So I re-connected them again and wriggled the wiring to see if there were any breaks, and pushed down hard on the connector blocks...Bingo, the larger of the 3 (with 4 wires) was dodgy!

There was nothing obvious, in fact it all looked like new.. Anyway, with nothing other than to push down hard on the block (even after it had clicked home) it was all working again. So I carefully put it all back together and it all works again. I'll only re-new/look at a more solid fix at some point if it plays up again.

I've done the door carrier and now door trims, so the next time I need to take the door trim off and disturb the connections is when the door regulator goes, right?!!

Thanks for the input gents, as always, much appreciated.