This is a classic campaigning blunder. Remember David Davis smirking when a young audience member on Question Time told Cameron he “couldn’t run a bath”? Basher’s team later denied he was “on the payroll”. Guido has obtained photographic evidence of William Aitken receiving a large cheque signed by David Davis.

This picture is taken from the opening seconds of the Davis Campaign video released today. It was filmed at the University of London a week ago.