I've had good results from "LoxleyColour" in Glasgow.

I've only put a couple of colour films through them mind you -- and half a dozen or so B & W 120 -- maybe not enough for a fair impression.

However, I've been happy enough with all of them and less happy with Peak last time I sent them some 120.

Loxley are cheaper than Peak too.

http://www.loxleycolour.com

You need to register (i.e. supply an email address) in order to download their price list.

Matt