We've endured lockdowns, firebreaks and tiers and are facing restrictions for months to come while new vaccines are perfected and rolled out. Saving lives is the priority, but restrictions are leading to job losses and business failure, increased poverty and worsening mental health? Is there any alternative? Some scientists think there may be but their views have attracted huge criticism. We hear from Professor Sunetra Gupta on what she calls 'focussed protection'. Could it work and get us 'BackinBusiness'? Or is it wishful thinking?