The City of London Police is expanding its security measures with Motorola Solutions personal body cameras for the entire police force.

Armed with a knife, a man attempted to force his way into Buckingham Palace today through the North Gate, the main everyday entrance to the palace to the right of the ornate central gates, according to The Daily Beast.

The news that G4S would not be able to provide enough guards for the Olympic Games came "out of the blue," according to G4S chief executive Nick Buckles.

A British tabloid reported today that it had been handed documents about security arrangements for the London Olympics that were left on a train by a police officer.