Battery fully charged, starter motor checked and working fine.
He also got all the bottom larger fuses out and checked for contamination, nothing found.
The dealer is collecting the car tomorrow, I am not confident that they will be able to fix this issue.
I spoke to Renault today they quoted me £45 for diag check and said that whatever they fault was it wouldn't cost me more than £200, how can they know this!!!
Pretty cheesed off not having my car this week, was just saying the other day how happy I have been driving it, (handles well, goes well, fuel consumption pretty good and enjoy getting flashed on the way to work by two other Megane owners).
Didn't see this one coming though

Kieron.