The Prime Minister has described the behaviour of Metropolitan Police officers who were secretly filmed making racist and sexist comments as "shocking".The footage, gathered undercover for a BBC Panorama documentary, appears to show some officers at a central London police station call for immigrants to be shot and brag about using violence against suspects.

The Prime Minister has described the behaviour of Metropolitan Police officers who were secretly filmed making racist and sexist comments as "shocking".The footage, gathered undercover for a BBC Panorama documentary, appears to show some officers at a central London police station call for immigrants to be shot and brag about using violence against suspects.