Parliament terror attack: Latest updates

Here are the latest updates on the terror attack at the Houses of Parliament this afternoon.
An air ambulance outside the Palace of Westminster, LondonAn air ambulance outside the Palace of Westminster, London
An air ambulance outside the Palace of Westminster, London

A man apparently armed with a knife was shot by police outside the Palace of Westminster after several people were hit by a car on nearby Westminster Bridge. Please refresh your browser for latest updates.