Global energy markets have been sent into a fresh period of volatility this week, as benchmark Brent crude oil prices crossed the $100 per barrel threshold for the first time since May, driven by escalating military tensions across the Middle East that have renewed widespread concerns over the security of international energy supply chains.
After a multi-day rally that accelerated sharply on Thursday, the global oil benchmark jumped more than 6% following an expansion of U.S. military operations targeting Iran. The sharp upward price movement was triggered directly by attacks on commercial oil tankers transiting the Red Sea carried out by Yemen’s Houthi militia. The Red Sea serves as a critical alternative export corridor for Saudi Arabia, allowing the kingdom to route oil shipments bypassing the Strait of Hormuz, the world’s other most vital chokepoint for global energy trade.
Alongside crude oil, natural gas prices have climbed steadily over the past four weeks. The United Kingdom’s wholesale gas benchmark now trades near 150 pence per therm, a sharp jump from the 98 pence recorded at the end of June.
This latest rally marks a sharp reversal from the market downturn that followed a brief temporary ceasefire between Washington and Tehran earlier this year. After the ceasefire took effect, oil prices fell back to levels last seen before the U.S. and Israel launched military actions against Iran on February 28. That ceasefire has since collapsed, and this week U.S. Secretary of State Marco Rubio confirmed that Iranian leadership remains “not ready to make a deal” to de-escalate tensions.
The sustained escalation in the Middle East now carries significant risks of rekindling inflation across major developed economies, including the U.K. and U.S., forcing higher costs onto consumers at every level of the supply chain. By default, higher crude prices translate directly to increased costs for petrol and diesel. While motorists bear the immediate brunt of these increases, households across all income brackets will also see upward pressure on the prices of everyday goods, most notably food, as transport-dependent businesses pass elevated fuel costs onto end customers.
Prior to this latest market shock, both the U.K. and U.S. had recorded steady declines in inflation. The U.K.’s annual inflation rate fell to 2.6% in June, a drop driven in large part by cooling fuel prices, while U.S. inflation settled at 3.5% over the same period. Analysts now warn that these downward trends could prove temporary if energy prices remain at their current elevated levels.
Fresh industry data published Thursday already reflects early price increases at the pump. In the U.K., the RAC motoring group reports that average petrol prices have risen 5 pence per liter since the start of July, hitting nearly £1.56 per liter, while average diesel now stands at £1.72 per liter. Across the Atlantic, U.S. motor advocacy group AAA confirms that the national average price for gasoline has once again crossed the $4 per gallon threshold, up from $3.92 just one month ago.
“More expensive fuel and energy can ripple through the wider economy, increasing costs for businesses and ultimately feeding through into the price of food and other goods,” explained Jonathan Raymond, an investment manager at Quilter Cheviot. “This creates another headache for central banks as they continue their battle against inflation. If energy prices remain elevated, policymakers may come under pressure to keep interest rates higher for longer or even raise them. This would come as a blow to mortgage holders and borrowers already feeling the strain.”
The Bank of England, which has held its baseline interest rate at 3.75% through four consecutive policy meetings, is widely expected to hold rates steady again at its next gathering, according to Paul Dales, chief U.K. economist at Capital Economics. Dales added that most analysts still project rate cuts will begin next year if energy price increases stabilize and cool off.
In the U.S., newly appointed Federal Reserve Chair Kevin Warsh signaled a hardline stance on persistent inflation during recent testimony before Congress, stating that the central bank has “no tolerance to persistently elevated inflation.” Former President Donald Trump, who pushed Warsh’s predecessor Jerome Powell to implement deep rate cuts, has repeatedly made clear he expects Warsh to deliver lower borrowing costs for American households. Despite this pressure, the Fed held rates steady in a range of 3.5% to 3.75% at Warsh’s first policy meeting last month, and he reaffirmed to Congress his commitment to “restoring price stability” in the face of new inflationary pressure from Middle East supply risks.