For Sir Craig Mackey's knighthood to be cancelled and annulled".

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Isis supporter Khalid Masood 52, had mowed down pedestrians on Westminster Bridge before crashing his hired SUV into the perimeter fence near the Houses of Parliament, before running through the gates and stabbing unarmed PC Keith Palmer to death.

Sir Craig Mackey, now Deputy Commissioner of Scotland Yard, had been to a meeting with Policing Minister Brandon Lewis and was being driven out of the Palace of Westminster when the carnage unfolded on March 22 last year.

A senior member of the police Mackey locked himself in his car & watched as a terrorist stabbed his colleague to death at the House of Commons.

Not only was this a gross dereliction of duty, but it was also an act of extreme cowardice.