In the documentary, called Idris Elba: Our Knife Crime Crisis, the Hollywood star meets a 17-year-old boy at Feltham young offender institution who first began carrying a blade when he was 13. He grew up in a violent home and had been badly bullied at school for having dandruff.

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.

Luther star speaks ahead of the release of BBC documentary in which actor talks to victims’ families, police officers and teenage offenders

Idris Elba has suggested that more could be done to make kitchen knives safer in order to reduce crime rates across the UK. Speaking to BBC Radio 4, the actor and activist claims that around 25% of knife attacks are caused by knives commonly found at home, and “areas of innovation” could help reduce this.

Idris Elba tells BBC Radio 4's Today programme that kitchen knives could be made without points on the end 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,