Sir Keir Starmer is vowing to fight any challenge to his leadership rather than stand aside, amid claims of plotting by MPs being compared to TV's The Traitors.

Number 10 is going on the attack ahead of a difficult budget this month, with fears it could prove so unpopular that Labour MPs may move against Sir Keir.

But Sky News political editor Beth Rigby reports the prime minister has no intention of giving way, with allies warning any challenge would lead to a drawn-out leadership election, spook the markets, and create more chaos that further damages the Labour brand.

One senior figure told Rigby any move against Sir Keir would be more likely to arrive after next May's elections, rather than the budget.

They said many Labour MPs could probably get behind measures like tax rises f

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