The UK is facing a significant rise in government borrowing costs, reaching the highest levels seen in 18 years, as the political landscape grows increasingly tumultuous. This uncertainty has been exacerbated by Andy Burnham’s announcement to seek a parliamentary seat, stirring fears that his leadership could lead to increased public borrowing. As a result, the pound has weakened, highlighting the market’s apprehension regarding the potential shift in economic policy.
Economic Impact of Political Moves
On Friday, the yield on 10-year government bonds surged to over 5.17%, marking the highest rate since 2008. The escalating borrowing costs are not unique to the UK, as many European nations are also experiencing rises, but analysts have noted that the UK’s increases are particularly pronounced. This trend has raised alarms over Burnham’s potential leadership, as investors worry that his approach may lead to expanded public spending, which could further strain the already high levels of national debt.
In reaction to Burnham’s candidacy, the pound fell by 0.3% against the US dollar, settling around $1.336. This drop follows a sharper decline on Thursday following the announcement, placing the currency down 1.5% for the week. Kathleen Brooks, research director at XTB, remarked, “This is a sign that Burnham is the least market-friendly of all the candidates, as Wes Streeting’s resignation did not have the same negative effect on the pound.”
Rising Long-Term Borrowing Costs
Long-term borrowing costs have also seen a notable increase, with the yield on 30-year gilts climbing to 5.84%—a figure not observed in 28 years. This trend indicates a growing concern among investors about the future fiscal policies that might emerge from a Labour government under Burnham’s leadership.

The volatility in the markets has been compounded by global inflationary pressures, particularly due to the ongoing conflict in Iran, which has driven oil prices up. On Friday morning, the price of Brent crude oil exceeded $109 per barrel, a rise from $105.72 on Thursday, before settling back below $108 later in the day. Such energy price surges could further complicate the UK’s inflation landscape, making borrowing more expensive.
Political Landscape and Market Sentiments
Market sentiment appears to reflect a broader fear of a shift to the left in government, particularly with Burnham’s left-leaning rhetoric. AJ Bell’s investment director, Russ Mould, pointed out that while Burnham’s success in securing a parliamentary seat is uncertain, his statements have already influenced market perceptions negatively. “A process involving Burnham also promises to be more protracted and ‘noisy’, thereby prolonging and exacerbating the uncertainty about the political situation in the UK,” he noted.
Brooks highlighted the precarious state of UK politics, indicating that diminishing confidence among foreign investors in the gilt market could have serious repercussions. “Overall, UK politics is a mess,” she stated, suggesting that potential candidates might reconsider their strategies if significant declines in the pound or gilts continue.
Burnham’s Political Aspirations
Andy Burnham, currently the mayor of Greater Manchester, has confirmed his intention to run for parliament following MP Josh Simons’ announcement to step down. “We will change Labour for the better and make it a party you can believe in again,” Burnham declared, vowing to restore faith in politics for the electorate. However, his route to the leadership is fraught with challenges, including securing a candidacy for the Makerfield constituency and winning a potentially contentious by-election against Reform UK.

As Burnham continues to navigate the intricate political landscape, his ambitions could reshape Labour’s future and impact the UK’s economic trajectory.
Why it Matters
The rising costs of government borrowing and the weakening pound reflect the deep uncertainty prevailing in both the political and economic spheres of the UK. As leadership battles unfold, the implications for fiscal policy and public spending are crucial for investors and ordinary citizens alike. With Burnham’s potential ascendance to a leadership role, the markets are closely monitoring how his policies may alter economic stability, making this a pivotal moment for the nation’s financial outlook.