PC Lock was awarded for his bravery after it emerged he had tackled a gunman and saved the life of an SAS soldier.

A rare 1957 George Cross medal, discovered for a mere £20 at a car boot sale, is set to go under the hammer and could fetch up to £2m. The prestigious award was bestowed upon Second Lieutenant ...

Lock shouting instructions down to police officers below from the Embassy balcony - Brendan Monks/Getty Images ...

It led to a six-day stand-off that was ended when the Special Air Service (SAS) stormed the building, and saw Mr Lock receive the George Medal in recognition of his outstanding bravery.

It led to a six-day stand-off that was ended when the Special Air Service (SAS) stormed the building, and saw Mr Lock receive the George Medal in recognition of his outstanding bravery. He put himself ...