Well folks - just had a call from the BBC as Id registered my Cups problems with Watchdog. Theyve obviously had a lot of calls/e-mails about Renault and are now investigating cases. With my case being complete now, the lady I spoke too seemed interested that Renault UK did nothing and that the dealer gave me my money back.
Id advise anyone currently rejecting a Clio to get in touch with Watchdog. They might take your case on, plus you may get on the telly!