Stables catering for the larger rider in the South

[Xander]

One of my friends - a larger gentleman - is looking for a riding stable/school in the London/Surrey area. He claims to be 18 stones (although he doesn't look that big).
Can you all use your local knowledge and come up with some suggestions?

I appreciate that advertising is not allowed on this site so please PM me with any brainwaves.

Thanks!