Fortunately that was the first thing that worried me, but as i have no cover on it was obvious immediately.
It looks like the phase sensor (the one on the dizzy) has failed. Wires hanging out!!!
Hace ordered a new one £30, phew arrives tomorrow so hopefully thats it.
Thanks for your suggestions and it would seem you 2nd sensor option would be the right one. I will let you know tomorrow the outcome.
Cheers
G