How to cure the addictions that replace drinking: Many turn to cocaine and ketamine, online shopping, social media or unhealthy food when they stop. ANTONIA HOYLE, who quit herself, visits the clinic for high-flyers for the answer... ○

Seven women and five men, mostly mid-life professionals in casual tracksuits - some wearing slippers, some clutching bottles of water - are sitting in a room, surrounded by Cheshire countryside.