Need to find a good, trusted brazilian waxer in london!

Hi,

I'm trying to scope out a good brazilian waxer in London who doesn't charge sky high prices, but does the job well...I've been a few times before to have it done but every time I've been it's been disappointing...the beautician never seems to do it properly...i.e. they don't wax the hair from underneath or behind.

So, can anyone recommend a good waxer in London?

Thanks!