A street cleaner, who was stabbed while trying to stop a burglar making a getaway, has died from his injuries.
The man - aged 40 - was airlifted to hospital yesterday after the incident in Shepherds Bush. Police have arrested six people.
More top news
Muslim leaders condemned the "heinous and appalling" Westminster terror attack.
Travis Frain is recovering in hospital and has posted a photo to Twitter of Prince Charles by his bedside.
Acting Commissioner Craig Mackey led new policemen and women in paying their respects at a passing-out parade in Hendon, north-west London.