I go to Sajna's in Tooting, South West London. They charge £3.
omg uzzy. i keep telling these london gals to go there for their bridal stuff as I was really surprised to find that my cousin's wife had her walima hair/makeup/duputta done from there as she was looking really good - but no one listens! almost everyone know i knows goes there for threading and waxing though.
only prob is that tooting is ewww :(