Leftwing Labour MPs have expressed private fears that they could also lose the Labour whip after Keir Starmer’s decision to bar Jeremy Corbyn from standing for the party. The move has also put into question the future of the campaign group Momentum after Starmer said those who did not back his leadership should leave the party. Activists at the grassroots group said they were determined to remain a Labour campaign group and support Labour candidates. Momentum said it had had its biggest surge in new members for many months and said it would in future be putting pressure on policy...