Pouria Zeraati was stabbed in the leg outside his home in Wimbledon by unknown men who then fled the UK.

Mr Zeraati is a journalist at the TV news channel Iran International, which had already been forced to temporarily leave its HQ in Chiswick, west London for Washington over threats to staff.

The reporter told Sky News he believed the attackers were Iranian state actors aimed at intimidating him and forcing him off the air.