I have used PharmaCentre since their intro deal last year (which sadly ended) gave you a loyalty card and you got every 10th wax free. Then it cost £15 if you pre-booked your next appointment. The girls are always charming and will quickly gauge if you want to chat or not. Friends or SATC is on the tv, so there are no awkward silences. There's usually always space 1 or 2 days in advance, even for busy after-work hours. There's no (forgive me) fanny-ing about with waxing small areas slowly, they are quick and efficient and a full Hollywood and back never takes more than 25 minutes. The only reason I booked through Treatwell and not directly is because they haven't brought back the loyalty card!