Police have arrested a man who climbed over a wall at Buckingham Palace.

A 41-year-old scaled an outside perimeter wall on May 18.

Officers were alerted and the intruder was located within the grounds. He was arrested on suspicion of trespassing on a protected site (contrary to section 128 of the Serious Organised Crime and Police Act 2005) seven minutes after the alarm was activated. The man remains in custody.

The man was not armed. Commander Adrian Usher, head of the Met Police ’s Royalty and Specialist Protection, said: “I am content that our security measures worked effectively on this occasion and at no time was any individual at risk.”

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Enquiries continue.

Last month Greenpeace protesters placed emergency face masks on the Queen Victoria statue opposite the palace in an effort to demand action on air pollution.