Banning the sale of zombie knives is a positive step, but schools need to intervene earlier to help tackle the UK's knife crime crisis, says Idris Elba. The actor, 52, has spent the last year making a documentary for the BBC about solutions to knife crime,

The BBC film sees Elba meet prime minister Sir Keir Starmer, who said that his party would commit to halving knife crime if elected, and the King, where the pair discussed solutions to the problem with some of the young people most affected by youth violence.