Sir Keir, what have you done? Having climbed down over welfare reform, the prime minister now faces a left wing with the bit between its teeth. They are in the ascendant all right, and don’t they know it.
The latest to step up to the plate is Lord Kinnock. The former Labour leader says there are “pathways to raising taxes that, I think, people are willing to explore and actually would commend themselves to the great majority of the general public.