Iran War Fuels Diverging Fed–BoE Paths

An Iran war driven energy shock is now pushing inflation sharply higher, with headline rates in the UK already above 3% and similar pressures building in the US. That backdrop has put the Federal Reserve and Bank of England on visibly different near term policy tracks.

The Fed has responded with additional rate hikes, lifting its target range to around 3.75-4% to counter conflict-fueled inflation. By contrast, the Bank of England is preparing to hold rates despite rising domestic price pressure, signaling a willingness to tolerate higher inflation for longer relative to the US.

With this policy divergence emerging, relative pricing in UK government bonds (gilts) versus US Treasuries is becoming more sensitive to incoming inflation data and rate expectations on each side of the Atlantic. A firmer Fed path typically supports the US dollar against the British pound, while a more cautious BoE stance can anchor gilt yields despite elevated UK inflation.

Geopolitically driven energy spikes have historically produced uneven effects across economies, as seen in the 1973-74 oil shock when inflation and real returns diverged between the US and Europe. Under similar conditions, differentiated central bank responses tend to feed into persistent gaps in bond yields, currency performance, and equity index leadership.

In the current episode, energy-related assets such as oil sit at the center of the shock, while inflation-linked bonds in both the UK and US reflect changing probabilities of higher-for-longer price growth. UK and US equity indices are increasingly trading off the interplay between energy costs, real rates, and currency moves implied by this widening Fed–BoE policy split.