I'm not from the UK but here's a directory from a forum I get on that might help you: http://www.bodyjewelleryshop.com/piercing_directory/
Here's some info from the Association of Professional Piercers about what to look for in a piercer. It's based in the US but this still applies: http://www.safepiercing.org/piercing/ch ... a-piercer/
Good luck! Choosing a good piercer is super important. The piercer I go to now (who is now the only person I'll let pierce me) is amazing but I've also been to some really
crappy shops and I can tell you that the difference is unbelievable.
I have 1/2" lobes and 11 piercings: left helix x2, both conches, both nostrils, septum, navel, and VCH.
My lobes are small but I know a lot about stretching and how to do it safely, so message me if you have any questions!