Boris Johnson has pulled out of a conference of northern Tories as activists bid to boost the party's chances of hanging on to the so-called Red Wall.
The Prime Minister had been expected to give a speech at a meeting of the Northern Research Group in Doncaster today as part of a journey to campaign in the Wakefield by-election.
But Downing Street has told the group the PM won't be going after all - with no apparent reason yet given.
