A bit closer to you: http://www.britainwestmotorsport.com/index.html
I've heard nothing but good things about them. The few times I've personally contacted them for parts/questions, they've been more than helpful.
Good luck!
My wife loves coming on rides, she says it makes her feel glamorous with all the people waving and taking pics.
Stangest comment was from a teenager while gasing up: "Wow, that is sooo ghetto!!"
I feel for you. I've had 5 kidney stone attacks so far, last one was about 10 years ago, shortly after take-off during a very long flight to Seoul... Give me morphine or a gun.