UK Borrowing Costs Hit 18-Year High as Burnham Leadership Bid Rattles Markets
BBC Business reported Friday that UK gilt yields climbed to their highest level since 2008. The move came as Greater Manchester Mayor Andy Burnham confirmed plans to contest a parliamentary by-election, reigniting fears over the direction of a potential future Labour government.
Yields Surge as Burnham Eyes Westminster Return
The yield on the benchmark 10-year UK government bond briefly topped 5.14% during Friday’s session. That marks the third time in a week that 10-year yields have breached levels not seen since 2008. Longer-dated debt fared worse. Yields on 30-year gilts climbed to a fresh 28-year peak of 5.82%, reflecting deepening unease among fixed-income investors.
Sterling also came under pressure, falling around 0.3% against the dollar to approximately $1.337. XTB Research Director Kathleen Brooks noted the pound is now down roughly 1.5% for the week. She pointed out that the resignation of Wes Streeting earlier did not trigger a similar reaction, suggesting markets view Burnham as the least fiscally orthodox candidate in the race.
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A History of Friction With Bond Markets
Burnham’s market-unfriendly reputation did not emerge overnight. In a prior interview with the New Statesman, he argued the government needed to move past its reliance on bond market sentiment when setting economic policy. That comment resurfaced sharply this week. AJ Bell Investment Director Russ Mould said the remark directly contributed to the rise in borrowing costs and the slide in sterling. He also warned the leadership contest could prove prolonged and disruptive, extending political uncertainty well beyond what markets had priced in.
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Wider Market Pressures Add to the Pain
UK stocks retreated in step with gilt markets. The FTSE 100 fell approximately 1.7% on Friday. European peers posted comparable declines as the Iran conflict continued to weigh on risk appetite globally. Brent crude briefly crossed $109 a barrel before easing slightly, sustaining concerns that energy-driven inflation could complicate central bank policy.
Jefferies economist Mohit Kumar told Reuters that investor anxiety centers on a Burnham-led government potentially widening the UK’s already elevated fiscal deficit. Brooks added that visible signs of foreign selling in the gilt market could force leadership hopefuls to reconsider their timing. Burnham still needs local party selection and must win a contest that Reform UK is expected to contest strongly.
