Outspoken Lee Anderson has called on Laurence Fox to stop talking "b******" in an ugly Twitter spat - hours before pulling out of the launch of a rebel Tory report over immigration.
The party's deputy chairman was expected to help launch a new plan accusing the Government of failing to live up to election promises.
But audience members were told he was too sick to deliver his speech, amid questions over whether Mr Sunak would have to step in if he put in an appearance.
