Finance minister Kwasi Kwarteng's plans will require an extra 72 billion pounds ($79 billion) of government borrowing over the next six months alone, and - a particular concern for investors - cement permanent tax cuts costing 45 billion pounds a year. But to bond investors, they bring the prospect of more persistent inflationary pressures - at a time when inflation is already near a 40-year high - as well as tighter Bank of England (BoE) policy. Government borrowing is likely to total 218 billion pounds this financial year and 229 billion pounds in 2023/24, Citi predicted, and it expects benchmark 10-year British government bond yields to rise to 4.25%. Adding to the pressure, on Thursday the BoE confirmed it planned to reduce its own 838 billion pounds of gilt holdings by 80 billion pounds over the coming year. "That is a strong indication that domestic and overseas investors are losing confidence in the UK's inflation-fighting credibility," he said.

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