British Prime Minister Liz Truss fired her finance minister Kwasi Kwarteng on Friday, shortly before scrapping parts of their economic package in a desperate bid to survive the market and political turmoil gripping the country.

Kwarteng said he had resigned at Truss's request after rushing back to London overnight from IMF meetings in Washington.

"You have asked me to stand aside as your Chancellor. I have accepted," Kwarteng said in his resignation letter to Truss, which he published on Twitter.

Truss said in response: "As a long standing friend and colleague. I am deeply sorry to lose you from the government.

"We share the same vision."

Jeremy Hunt, a former foreign and health secretary, will replace Kwarteng.

British government bonds, which have started to recover since her government started looking for ways to balance the books after the plan for unfunded tax cuts crushed the pound and gilts and drew international censure, rallied further.

Kwarteng is the country's shortest serving chancellor since 1970, and his successor will be the fourth finance minister in as many months in Britain, where millions are facing a cost of living crisis. The finance minister with the shortest tenure died.

Truss's own position is in jeopardy.

She won the Conservative Party leadership last month by promising vast tax cuts and deregulation to try to shock the economy out of years of stagnant growth, and the fiscal policy Kwarteng announced on Sept. 23 aimed to deliver that vision.

But the response from markets was so ferocious that the Bank of England had to intervene to prevent pension funds from being caught up in the chaos, as borrowing and mortgage costs surged.

The duo had been under mounting pressure to reverse course after polls showed support for the Conservative Party had collapsed, prompting many colleagues to look for ways to force them out of office.

"The party loves the idea of principles and conviction politicians, but staying in power is everything," one party insider told Reuters. "Ruthless can also be popular."

Having triggered a market rout, Truss now runs the risk of bringing the government down if she cannot find a package of public spending cuts and tax rises that can appease investors and get through any parliamentary vote in the House of Commons.

Her search for savings will be made harder by the fact the government has been cutting departmental budgets for years.

At the same time Conservative Party discipline has all but broken down, fractured by infighting as it struggled first to agree a way to leave the European Union and then how to navigate the COVID-19 pandemic and grow the economy. (Reuters)