Best threading places in London?

[clarabellabella]

I got my eyebrows threaded last year sometime, which was quite good and made me look slightly less dishevelled for a number of weeks. But, the place I went was in the middle of Selfridges or something (not very private) and was wondering if people knew of a brilliant threading place?

www.vaishaly.com/acatalog/threading.html

Was told that Vaishaly is one of the best. Have never been there myself so I don't know if the threading is really that brilliant or what they charge. Website looks nice though, but might be a bit on the expensive side