Before I get the shouts and screams of "do it yourself"

, my Falco is due it 9.5k service, which includes the valve clearance check - as it's still under warranty (I think - 3 years is it, or two?), I'm going to get an Aprilia dealer to do it, and hopefully if they pick anything up I can get it sorted before the warranty lapses. Can anyone suggest a decent Aprilia-approved service centre in/around Cheshire? I've used Rocket Centre at Blackburn before and was impressed, but that's a bit further than I'd like to travel if I don't have to.
Thanks