Starmer tells MPs to ‘fight together’ before critical day for his premiership

The prime minister faces a standards investigation over Mandelson affair and testimony from Morgan McSweeney

Keir Starmer has told Labour MPs to “stick together and fight together” as ministers launched a massive operation to shore up his fragile position before a critical day for his premiership.

The prime minister faces the double threat of a standards investigation into his decision to appoint Peter Mandelson as ambassador to the US and a potentially damaging testimony from Morgan McSweeney, his former chief of staff.