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A total of 22 flights out of Heathrow had to be cancelled and others delayed due to yesterday’s runway protest.
Campaigners from activist group Plane Stupid staged the early morning demonstration in opposition to airport expansion.
The Metropolitan police confirmed security at the airport would be reviewed following the protest.
A spokesman told the Press Association yesterday: “The Metropolitan Police Service works closely with Heathrow Airport Limited to keep those who use or work at Heathrow safe and secure.
“The Metropolitan Police and Heathrow will jointly review today’s protest incident at the airport and make necessary changes to the security plan.”
A total of 13 people were charged with aggravated trespass and entering a security restricted area of an aerodrome, the police said.
They are due to appear at Uxbridge Magistrates Court on August 19.