The Uxbridge by-election has thrown Labour into a civil war, or at least a civil skirmish. Keir Starmer has told Sadiq Khan to think again on Ulez, and Khan has shown great reluctance to do so. But it has exposed a schism in the Conservatives, too.

Yesterday, Rishi Sunak declared that efforts to reach the government’s net zero target should not be allowed to push up the cost of living for struggling families – leading some to predict that some policies, such as the ban on petrol and diesel cars from 2030, could be scrapped.