UK gilt yields spike to above 5% as markets deliver a muted verdict on Burnham's fiscal debut and chancellor surprise

UK government bond (gilt) markets delivered a cautious response to Prime Minister Andy Burnham's first day in office on 21 July 2026. The yield (the effective interest rate investors demand) on the UK 10-year gilt rose by approximately 0.08 percentage points overnight to around 5.04%, while equivalent French and Italian government bond yields rose by only 0.02 percentage points on the same day. Bond prices move inversely to yields, so the UK underperformed its European peers. Investors focused on two signals. First, Burnham's pledge to make full use of the "flexibility" within existing fiscal rules raised concerns about higher government borrowing. Second, his appointment of John Healey, the former defence secretary, as chancellor of the exchequer came as a market surprise. Markets had anticipated either the former home secretary or the former energy secretary for the role. Healey had previously resigned as defence secretary over what he considered insufficient military spending, meaning his chancellorship will require balancing defence commitments against other public spending demands. Analysts described the UK's fiscal position as "pretty fraught", with the government already paying the highest market borrowing rates among the Group of Seven (G7) economies. The 10-year gilt yield is the only one in the G7 above 5%, and the UK's annual debt-interest bill has already exceeded £100 billion. Burnham also floated the possibility of raising the personal income tax threshold as a cost-of-living measure, which analysts said would amount to a large-scale tax cut and further unsettled investors.