Four people have died in what police in London are calling a terrorist attack, including one police officer and the assailant.
20 people are injured, with some of those injuries said to be catastrophic, after a car ploughed into pedestrians, before the attacker attempted to gain access to the UK's House of Parliament
Our correspondent Natalie Powell reports from London
IN: A full counter-terrorism
OUT: SOC
DUR: 29 seconds
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