The head of Scotland Yard issued a public apology today ahead of a damning documentary showing a cadre of officers behaving in an 'appalling criminal way.'

Panorama undercover investigation captures evidence that "toxic behaviours", far from being driven out of the Met, have been driven underground.

The head of Scotland Yard issued a public apology today ahead of a damning documentary showing a cadre of officers behaving in an 'appalling criminal way.'