Tattoo removal

My wife is in the process of having two removed, possibly at the place tika mentions. They have two different lasers, one is good bor black the other for colours or something like that, i'm sure i've simplified it some in my head. The cost is based on the size of the tattoo to be removed. The number of sessions is also dependant on the tattoo.
The laser does do some kind of burning thing and the process is very painfull, but quick. It blisters massively. How you care for it after the treatment is influential in how it heals as well as your skin type and general level of health. The place my wife uses plain refuse to do black folk as it will end up as a patch of white skin where the tattoo was, olive skin they would probably do but warn you that the skin may end up lighter.
She has had something like 6 sessions so far on one piece, black tribal like, and it is hugely faded but not gone. She perhaps hasn't looked after it as best she could so the skin is kind of white marked in places. I can't remember if they were claiming complete removal but she intended only to fade this enough so that she could put something else over it. The other piece is smaller and colour, has had three sessions so far and is greatly faded, this was much less painfull too (smaller, wishy washy colour rather than solid black so less serious lasering).
Lack of funds have halted the process at the moment.
I could get the number, she keeps fliers for them in the tattoo shop she works in.

We also have a friend with a piercing and tattoo shop who is able to do tattoo removal. In that he does branding and has branded into black work to erase the tattoo. I'm not sure if he offers this as tattoo removal of if it was part of a long term plan of this customers body art.

thank you for all that info, a great help and yes, if you could pass a number on i will check it out in more detail once Im back in London