Once upon a time in an address to the South East Region, which includes Kent, Al Aynsley-Green (now the Children's Commissioner) warned against persistent attempts by the popular media to ‘demonise’ teenagers. The BJGP has performed a useful service in summarising our limited understanding of the long-term consequences of screening school children randomly for traces of illicit drugs.1 The economic and workforce costs are high and there is no evidence of health gain. I was consulted (pro bono) about some aspects of the unilateral initiative in Kent. That …