try healthierweight - its based in birmingham and the whole surgery is just about weight loss.
their surgons have done over 6000 lap bands and Dr ashton is one of the worlds most respected specialists in obeseity and its treatment. - they have been using the LAP-BAND® for 12 years.

its more expensive (about 15% more) but you get what you pay for. Ive been very happy with them.

I'd go with them - also its unlimited fills for free in first 18 months - and has great aftercare, support groups, diet advice, 24 hr emergency care etc