UK Gilt Yields Rise as US-Iran Standoff Sparks Inflation Alarm

The yield on the UK’s 10-year gilt climbed to 4.8%, nearing multi-year highs, as inflation fears reignited after the collapse of US-Iran peace talks. The US blamed Iran’s refusal to abandon nuclear ambitions, while Iranian media condemned "excessive" US demands for the breakdown. Escalating tensions, US President Donald Trump threatened to blockade the Strait of Hormuz, a critical oil chokepoint, sending Brent crude soaring to $102 per barrel. The spike has deepened the global energy crisis, raising fears of an inflation shock and prompting traders to price in nearly two Bank of England rate hikes by the end of 2026, up from just one last week.

The yield on the UK’s 10-year gilt rose to 4.77% by the end of a turbulent week, little changed from the previous week and hovering close to its highest level in years. European borrowing costs remain elevated, as investors turn their attention to upcoming US-Iran ceasefire talks. Persistently high oil prices have reignited inflation concerns, reinforcing expectations of a more hawkish stance from the Bank of England, with traders now pricing in at least one BoE rate hike by the end of 2026. Meanwhile, Iran maintained its near-total blockade of the Strait of Hormuz, causing the worst disruption to global energy supplies on record while insisting on Lebanon’s inclusion in peace talks. US President Trump struck a dual tone, expressing optimism about a possible deal but later warning Iran over new fees imposed on ships transiting the vital waterway. Meanwhile, Ukraine’s top negotiator unexpectedly signaled progress toward a potential peace deal with Russia.

The yield on the UK’s 10-year gilt increased by seven basis points to 4.72% on Thursday, rebounding from a 19-basis-point drop the previous day. The shift came as mounting uncertainty over the fragile two-week ceasefire between the US and Iran sent oil prices soaring, amplifying concerns about energy-driven inflation. Tensions escalated after Israel carried out its most devastating airstrikes on Lebanon to date, resulting in hundreds of casualties and prompting threats of retaliation from Iran. Tehran rejected the possibility of further peace talks with the US, while the continued blockade of the Strait of Hormuz added pressure to the already precarious truce. US President Donald Trump further heightened tensions by stating that US forces would remain near Iran until a “real agreement” is secured. Against this backdrop, traders are once again increasing their bets on policy tightening, with at least one Bank of England rate hike now anticipated by the end of 2026.