The Metropolitan Police Commissioner Sir Bernard Hogan-Howe has come under fire from Conservative politicians over a leak of information to newspapers about the so-called 'Plebgate' scandal, which caused Cabinet Minister Andrew Mitchell to resign.
Some Tories have suggested he was the source of the leak and have called on him to resign.
Glen Goodman has the details:
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They said they wouldn't do it. But the Met Police couldn't resist the challenge set by their colleagues in Scotland.