When I heard the news this morning that Labour would be backing Philip Hammond’s tax cuts for the richest, I experienced something that always sends a shiver down my spine — a flashback to the 2015 Labour Leadership election.

It reminded me of the moment in shadow cabinet, shortly after the general election, when acting leader Harriet Harman informed us of her thinking on George Osborne’s Welfare Reform Bill with its cuts to tax credits and the two-child policy.

I remember a distinct sense of disbelief as I listened to Harriet recommending that we support it, on the reasoning that we had lost the election and should now support an agenda which was clearly popular with some of the public.

I spoke up against her