Hi all
Thought I would put an update on, as everyone was so helpful.
I pulled the valve cover off this morning, set No1 to tdc, pull out the dizzy and put it back in the right place, turned the key and she fired up and ran beautifully! And on the move, the car is transformed!! No over-heating, sips the fuel, pulls strong in every gear.

Thanks once again for all your help and advice
Cheers, Taff