After fighting an intermittent no crank problem, everything on the car would work except the starter, for over 3 years I think I found the culprit. I determined a few months ago that it appeared to have something to do with the CANBUS. I figured this out when I was unable to link up the OBD scanner when it was in the no crank condition. One of the modules involved was the ABS and since it appears to be a major source of aggravation I started there. I had the no start condition after driving to an event, popped the hood, pressed and slightly wiggled the connector at the ABS module, got in and the car fired right up. I have done this at least a half a dozen times since and every time the car fires right up. Pin's 5 & 15 are the CANBUS leads, so as soon as I can fit in the time I'll get in there and make the necessary correction.
Hope this might save someone some aggravation.

 

It may be a dry joint (a bad bit of soldering) - something that's affected a fair few ABS controller circuit boards.