Really don't know what to say about this place. I went on three occasions during a long weekend in London (Thurs and Fri night and Sat daytime/early evening).
Firstly, if you're expecting everybody to walk around naked, you'll be disappointed. There are more bikinis here than on Miami Beach! However, if you're into black girls, this might well be the place for you.
On the Thursday, it was quite busy with a range of ages. The one fully naked couple in there were attracting quite a bit of attention in the large jacuzzi and I was lucky enough to be selected for a threesome with them in one of the private rooms later on!
The Friday was pretty quiet and largely uneventful and the Saturday seemed to be going the same way until the most stunning black girl I have ever seen entered the large jacuzzi with her boyfriend (both fully naked). She proceeded to get herself off and it was a joy to watch, although the number of guys who moved in next to her was a little embarrassing and clearly made her a little uncomfortable.
I'd definitely go back, but if you're thinking of going - go in hope rather than expectation.