SIR KEIR STARMER has come under fire from the left after announcing his plan to turn his back on Corbynism and its manifestos in order to put forward a new blueprint for power. 

The Labour leader has been warned that the party’s poll ratings could fall even further with him at the helm if he goes ahead with plans to abandon policies set out in the 2017 and 2019 manifestos. 

The criticism comes after Sir Keir told a centrist think-tank conference on Sunday that the party’s policy review would not take previous manifestos as its starting point — including the radical and popular policy plans outlined by Mr Corbyn.