Many thanks for all your replies guys.
My current dealership is down south. Same dealership for purchase (brand new) and yearly services/MOT. They have actually been pretty good over the years, that is until my recent experience. I have been left with the feeling that something is wrong/out of order there. As they say, you're only as good as your last performance AND their last performance was definitely not up to scratch.
I'm happy with the cars but now I'm considering a new dealership to purchase my next new Lexus from and provide decent aftersales. They MUST be focused and give me the experience I want, both in Sales AND After. A "Good Experience" used to exist in the UK as I've had it but now I'm trying to find it again.
I don't expect the same standard of service I receive at my local Lexus dealership when in Japan but I do expect quality and professionalism.
Enough of my moans and thank you for your suggestions of Leeds and Bradford, they are not too far from where I frequent from time to time.