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On Thursday, UK government bonds saw a surge following Sir Keir Starmer’s announcement that Rachel Reeves would remain chancellor for an extended period, assuring that her fiscal policies would remain in place.

This commitment came after Prime Minister’s lack of support for Reeves during a session in the House of Commons on Wednesday, which had led to a notable decline in the value of gilts and the pound.

Market participants expressed concerns that Reeves’ potential exit might lead to the abandonment of current fiscal policies in favor of increased borrowing.

But in an interview with Virgin Radio on Thursday, Starmer said Reeves would remain chancellor for “a very long time to come, into the next election and beyond it”.

He added that he was “absolutely committed” to her rule that current spending must be matched by tax receipts by 2029-30.

The rally pushed yields on the 10-year gilt down 0.07 percentage points to 4.55 per cent on Thursday, reversing some of Wednesday’s sell-off, when yields jumped 0.17 percentage points. That move was the biggest one-day jump since April.

The pound, which fell 0.8 per cent against the dollar on Wednesday, recovered to trade up 0.1 per cent at $1.365.

“The gilt market likes the ironclad commitment to the fiscal rules and chancellor Reeves’ strong track record of taking the difficult but necessary corrective actions to make sure they are met,” said Tomasz Wieladek, chief European economist at T Rowe Price.

“The market is certainly giving the chancellor a vote of confidence,” added Sanjay Raja, chief UK economist at Deutsche Bank.

In a day of high political drama on Wednesday, Reeves appeared to shed a tear when Starmer did not give her his full backing when asked about her future by Conservative leader Kemi Badenoch at Prime Minister’s Questions.

Starmer told Virgin Radio on Thursday that he had not been aware of Reeves’ apparent distress at the time. “I actually personally didn’t even appreciate it was happening in the chamber because I came in and I’ve got questions being fired at me,” he said.

Reeves appeared much more buoyant on Thursday as she gave introductory remarks ahead of Starmer’s speech on NHS reform in London, embracing the prime minister as he took the stage.

She later told reporters: “Clearly I was upset yesterday, and everyone could see that. It was a personal issue and I am not going to go into the details of that.”

Reeves said she remained “totally” committed to her role as chancellor, adding that she was “not going to speculate” on whether she would have to raise taxes in the autumn Budget.

Asked if having the chancellor “look performatively happy in front of the cameras” was a sad indictment of the state of politics, Starmer said: “I don’t think that’s a fair description.”

On Tuesday, the prime minister had gutted his controversial welfare bill as ​he fended off a full-scale Labour rebellion in chaotic ​scenes in the House of Commons, leaving a multibillion-pound hole in UK public finances.

Reeves had been one of the cabinet ministers who had urged rebels to back the legislation.

Asked about the welfare U-turn by the BBC’s Nick Robinson on Wednesday, Starmer said: “It was important that we took our party with us, that we got it right, and Labour politicians come into public life because they care deeply about these issues.”

Nigel Farage, leader of the populist Reform UK party, said it had been “painful” to watch Reeves crying in the chamber.

“I thought she was ill to begin with. I am sorry for her, personally . . . When you work as part of a team, when one of them is limping, you help them out,” he told LBC. “[Starmer] left without saying anything to her, it looked a bit callous.”