Karl, I've just driven from Durham to NWPerformance to get mine done. I spoke to a couple of independents up here and neither inspired me with confidence. One didn't seem to have the tools and the other changed prices each time I spoke to them and just kept telling me how they were the best by miles!!
It's not a bad ride down to NWP and they seem to have done a good job.
There's a place in Darlo, Andy Harland who may be worth a try if you don't fancy it, but personally I would avoid Renault up here. I was quoted £950 for belts and service, I got belts,service,rear dampers, rear discs and pads for a lot less than that at NWP.