It has been claimed that Alan Rusbridger briefed Steve Hilton about unpublishable evidence regarding Coulson and dodgy connections. This apparently took place before he made the transfer to Downing Street. Cameron denied being given any evidence personally and said that he will look into what his advisor knew. For a media keen not to let the Dave connection to this scandal go, what Hilton did, or did not, say is crucial.
There was no love lost between Hilton and Coulson, especially in the latter days. Are we seriously expected to believe that Hilton, in course of his power struggle with Coulson, didn’t offer up the dirt to Cameron?