Forget all the above suggestions.
Go to Tora Tattoo in Waterloo. Get an appointment with Jamie (the owner).
Be informed - he takes consultation bookings once a month at most, with the consult being a good 2 months after booking. He's that good and that busy. Has won many international awards. Website is kind of "meh", but once you see his portfolio in the shop it's more than worth it for something you'll be spending your life with.