BBC's George Entwistle resigns as director general

George Entwistle has resigned as director general of the BBC, following controversy over the corporation's handling of Newsnight reports into child sex abuse claims.

BBC Chairman Lord Patten said it was "undoubtedly one of the saddest evenings" of his public life.

Earlier on Saturday Mr Entwistle said the Newsnight report should never have been broadcast, and that he had only become aware of the story after it was broadcast.