Sky News has revealed thousands of people with severe obesity are being denied access to effective treatment, partly because of a slow NHS rollout of the weight loss jab Wegovy.    Just 800 of the estimated 13,500 patients eligible to start receiving Wegovy had been prescribed the injection through hospital weight loss services by the end of April. Studies show people lose on average 15% of their body weight within months of starting treatment.   On today's Daily, Niall Paterson speaks to our science correspondent Thomas Moore about why it's so difficult to get weight loss drugs in the UK, and the impact on patients who've been denied the jab.    Producer: Soila Apparicio Editor: Philly Beaumont