UK borrowing costs climbed to their highest area in nearly 30 years as markets priced in a higher risk premium for UK politics, inflation, and fiscal credibility

📌 UK gilt yields rose sharply in the latest session, with the 30-year yield briefly touching 5.81%, its highest level since 1998, while the 10-year yield moved near 5.13%, the highest since 2008. This suggests the pressure is not only short-term volatility, but is also spreading into the government’s long-term borrowing costs.
⚠️ The market focus is now on the combination of domestic political uncertainty and external inflation risks. Concerns over potential leadership changes, public spending direction, and fiscal discipline have pushed investors to demand higher yields for holding UK bonds.
🛢️ Elevated energy prices are making the BoE’s policy outlook more difficult, especially as the UK remains sensitive to imported gas and oil costs. If inflation stays persistent, expectations for rate cuts could be pushed further back, keeping gilt yields higher for longer.
💷 The pressure has also spread to other assets, with sterling falling toward the 1.35 area against the US dollar, the FTSE 100 coming under pressure, and UK banks trading weaker. This is a typical reaction when the bond market signals that the economy’s cost of capital is rising.
🔎 The key point is that memories of the 2022 gilt shock under Liz Truss still make investors more sensitive to any sign of fiscal loosening. If politics stabilizes and energy prices cool, yields may ease back; if not, the 6% area on the 30-year yield will become an important psychological level to watch.
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