No evidence has been found of a link between Westminster attacker Khalid Masood and so-called Islamic State or al-Qaeda, Metropolitan Police say.  The Met told BBC Panorama it was also "speculation" to suggest Masood had been radicalised while in prison.

Masood killed three people when he drove a car into pedestrians on Wednesday. He then fatally stabbed a police officer before being shot dead.  Police believe he drove up to 76mph as he crossed Westminster Bridge.  The attack took place within 82 seconds.

Read more: BBC News