Brent crude futures jumped 4.4% to $108.96 a barrel, spurred by escalating conflict in the Middle East and threats to critical energy shipping routes. This energy price surge has forced traders to aggressively recalibrate their expectations for Bank of England policy. Markets have now fully priced in four interest rate increases by April 2027, doubling the count from just one week ago.

Adding to the pressure, the U.K. government faces a precarious fiscal outlook ahead of the October 28 budget. With national debt hovering near 94% of annual economic output and a projected deficit of 4% of GDP, analysts warn that any failure to demonstrate fiscal restraint could trigger further volatility. Stefan Koopman, a senior macro strategist at Rabobank, noted that the government’s challenge lies in balancing necessary spending against a market increasingly sensitive to further debt issuance. Ten-year gilt yields reached 5.426%, while two-year yields hit 4.965%, signaling broad-based unease that mirrors rising borrowing costs across developed global markets.