Mine has stopped ticking now.
I bought a new starter motor in Nov as I felt mine was on the way out but as it was starting ok and the weather wasn't exactly warm I left well alone.
Anyway 23/12 and it wouldn't start - nothing nada. Day before fine.
Anyway local autoelectricery place said they could do it morning of the 24/12 before they all buggered off to the pub.
Anyway they couldn't - efforts had already been made to get the top bolt out it seems and it was well and truely mashed. So off came the manifold, some welding was done and mashed bolt eventually removed. New starter fitted. It starts.
But the ticking sound I had put down to a rocker (not a slipped liner as had been suggested

) has gone so I guess mine was loose manifold bolts.
Just glad I didn't have the car at home trying to do the starter as I wouldn't have got it off either!
Bit of bodywork and the front end sorting this year and all will be well (apart from whatever goes wrong next that is).
Need to look at the front as wheel wobble is an issue - front wheels balanced today and its a bit better but bearings and steering damper next on the list to check.