An update for any that might read this, it is fixed.

I changed the whole distributor and it works again, in all liklihood it was the black electronic module on the side but i went for the whole thing. It is an easy job 2 bolts, just make sure you mark the position of the distributor on the dead, I drew round the outline. I also put a new little rubber seal an A smidge of sealant around the base to stop any oil leaking.