UK 30-Year Yields Hit Highest Since 1998 on Political Turmoil

UK 30-year gilt yields surged to their highest level since 1998 on Wednesday, as a deepening political crisis around Prime Minister Keir Starmer's future reignited fears about the country's fragile public finances.

The yield on the 30-year gilt climbed as much as 12 basis points to 5.45%, surpassing the previous high set in October 2023 and reaching levels not seen in nearly three decades. The move came amid reports of growing dissent within the ruling party and speculation that Starmer could face a leadership challenge. The selloff in long-dated bonds reflected investor concern that prolonged political instability could undermine the government's ability to address the UK's large budget deficit and rising debt burden. For traders tracking interest rate markets, the spike in long-term yields is a classic signal of rising term premium—investors demanding higher compensation for holding longer-dated debt amid heightened uncertainty. Live rates and charts on NowPrice show the 30-year yield has broken above key resistance levels, with the move accelerating as stop-loss orders were triggered.

Looking ahead, market participants will focus on any clarity regarding Starmer's political standing, as well as the upcoming UK GDP data and the Bank of England's policy meeting next month. A sustained rise in long-term yields could complicate the BoE's efforts to manage inflation expectations while supporting growth, especially if the political turmoil persists. Traders will also watch for any signs of contagion to other major bond markets, as the UK's fiscal credibility remains under scrutiny.