Make sure you go into the right place on Tisbury Court - this is a narrow building with a person on a desk to the left and four cubicles clearly visible from the street - NOT on of the "clip joints" on either side.
The premise is simple. You go into a small cubicle, there is a coin slot on the wall, and for every £2 you put in, a slot a bit bigger than a letter box opens and you get to look at a fully nude woman with her legs spread for one minute.
It really is as simple as that - for £2 a minute you can look at a nude girl.
I've said 8 out of 10 since, as a comparison, £10 gets you a fully nude dance at either The Griffin or Browns, or for around £25 you can get a "full service" by following one of the many "models" signs in Soho. So this is fair for a couple of minutes but there are other options out there too. Hope this review helps and please ignore the couple of comments about clip joints, they are not talking about the right place.