My wax at Wimbledon Leisure Centre was good. The beautician was friendly, competent and very speedy (in a good way - I want my waxes to be short and sharp!) The bed was heated - what a treat! And the towels were super fluffy. I'd definitely go back.
However, on the downside - the receptionist wasn't friendly or welcoming - actually quite rude (hence the 4 star rating) and the waiting area was uncomfortable and could be improved with comfier seats and more space.