Andy Burnham's ascendancy to a likely prime ministerial role, following his landslide win in the Makerfield by-election, has stirred the UK's $3 trillion debt market. Initially, his commitment to existing fiscal rules and emphasis on prudence reassured investors, with the 10-year gilt yield remaining flat at 4.74% and the 30-year yield around 5.45% after his recent speech. This suggests a cautious acceptance from the market, which has a "show me first" attitude after past volatility.
However, this fragile composure is not without significant underlying concerns. The market's skepticism stems from Burnham's past comments about not being "in hock to the bond market," and the long memory of Liz Truss's disastrous mini-budget in 2022, which caused real 10-year gilt yields to jump. While Burnham has since pledged adherence to fiscal rules and consulted former economic experts, the market is pricing in a premium for UK borrowing, reflecting ongoing fiscal risk.
The real test for market stability will come during the full leadership campaign, with its inevitable spending pledges and potential shifts in policy. Uncertainty also lingers regarding who Burnham will appoint as Chancellor, with names like Pat McFadden and Wes Streeting seen as market-friendly, while a Chancellorship by Ed Miliband raises concerns about fiscal spending and inflationary pressure. The market's muted response to his Makerfield victory might be fleeting, with analysts warning that yields won’t move significantly until investors reassess initial optimism and demand further compensation for fiscal risk.
The dynamic is reminiscent of the 2022 Truss selloff, with 10-year gilt yields flirting with a 2026 high of about 1.67% and sterling near its low against the dollar. While higher bond yields typically support a currency, this combination suggests deeper concern about the government's ability to manage its debt. Investors are wary of a "Truss Gilt Repeat" where a lack of credibility with bond markets leads to significant economic instability, implying Burnham must carefully navigate fiscal policy to maintain investor confidence.
