Sudesh Amman had been released from prisons days before he stabbed two people in a Islamist-related terror incident in London on February 2. Within minutes of the attack armed police shot him dead. In 2018 Amman was charged with spreading extremist material but was released after serving half of his sentence. Since the attack took place the government has announced emergency legislation will be introduced to end the automatic early release from prison of terror offenders.

In this episode we speak to the BBC’s Daniel De Simone who was at the Old Bailey when Amman was charged in 2018. We also talk to Richard Walton, the Met Police’s former head of counter-terrorism, about how to prevent terror attacks.

Producer: Alicia Burrell