Sorry to hear about your issues (clutch / boot / DRL)
Just wanted to chime in concerning Westway Nissan in Aldershot. I wasn't really impressed with their service either. I'm not mechanically minded so had a few things I wanted them to look into - a squeaky aux belt, rear window cleaner jet not working and a super high biting point (although no slippage). They called me later that day to talked me through the jet and clutch, but didn't even mention the aux belt although I'd made it clear that was the main thing I wanted addressed.
Plus their website says all their used cars come with a 12 month warranty. When I asked them if any of the costs were covered on that they turned around and told me it's out of warranty as I only get 6 months warranty as my car is over X years old (this was about 7 months after I purchased). I dunno... I saw the 12 months thing on their website prior to purchase so didn't even think to question it. I feel they should have told me prior to the sale if my car was an exception.
Sorry, I'm rambling on. Long story short, I share your dissatisfaction and wouldn't trust them with your zed.