I use a chap down in Bicester. It's not a horrid journey from Cov (straight down the M40). If you're still interested let me know and I'll get you his details. He a great bloke and doesn't bullshit you.

You will be hard pushed to get someone to respond to emails though. Most are too busy to bother and probably won't take you all that seriously. By far and away the best deals ar to be had over the phone and face to face.