Singhar Turnpike lane is the best value wax in North London - especially as they do summer deals. The ambience is slightly lacking (a little music in the waxing room would be nice) and the facilities minimal, but the wax is always thorough and done well.
Don't expect any fancy things, this is a practical establishment, no fancy candles and surroundings or anythin. It's cheap tho, and lady who did my was was good!