Thanks for the Diode Alan, you have a PM. I took the diode out altogether.
I've ordered a new genuine clutch switch from DS this morning, the (new) one that I got last week fell apart in my hands before I even got a chance to fit it. That's the second (new) one I've had that was rubbish so I'm hoping 3rd time lucky.
Went to start the bike this morning with diode and clutch switch out and nothing at the starter button in neutral.....
Put diode back in, power to the button and it started straight up.
I'm hopefully on the last lap now, I'll post pictures when finished. I just need carbs setting up, an engine tune and (hopefully) an MOT.
Roll on Sunmmer
Regards
Steve