Ftse100 Set to Slip as Oil Surge Hits Markets After Middle East Escalation
Wednesday at 9: 00 a. m. ET — The Ftse100 is under pressure as oil and gas prices remain volatile following an escalation in the US‑Israel conflict with Iran, a shift that has knocked Asian indexes lower and kept energy markets on edge. David Miles and other market analysts say the timing reflects fresh supply and shipping disruptions that crystallized this week.
Ftse100 faces headwinds as Brent crude and Asian indexes tumble
UK and US stock markets rose on Wednesday after two days of sliding share prices, but several Asian indexes plummeted for a third day, a split reaction that has left the Ftse100 vulnerable. The recent moves come as oil and gas prices, while dipping on Wednesday, remain far above pre‑conflict levels and continue to feed through to investor caution in London.
Brent crude jumped 12% after air strikes and shipping stoppages on Saturday
Brent crude prices have jumped by 12% since Israel and the US began bombing Iran on Saturday, and that surge — combined with virtually halted traffic through the Strait of Hormuz — is the proximate trigger putting upward pressure on energy costs. Shipping traffic near Iran has almost entirely halted, and roughly 200 tankers are effectively stranded, forcing insurers to raise premiums on vessels flagged to certain countries.
Strait of Hormuz disruptions, refinery attacks and production cuts squeeze markets
Around a fifth of global oil and gas flows through the Strait of Hormuz, and the near‑complete halt to traffic has coincided with an attempted drone attack on Saudi Arabia’s Ras Tanura oil refinery and a suspension of LNG production by QatarEnergy. Those concrete supply disruptions have pushed the benchmark UK gas price sharply higher and contributed directly to the broader market volatility that is weighing on the Ftse100.
Still, commentary from fiscal and market officials has sought to frame the economic impact. David Miles, committee member at the Office for Budget Responsibility, said the rate of inflation in the UK would increase if oil and gas prices stay high for a sustained period; he added the current rises are smaller than those seen after Russia’s full‑scale invasion of Ukraine four years ago. That assessment helps explain why some investors treated the latest selloffs as a temporary repricing rather than a full market rout.
Insurance and shipping strains have practical market effects: insurers have raised premiums, especially on vessels considered American, British or Israeli, and shipping companies are reluctant to resume routes through the strait. Those operational constraints reduce global supply flexibility, keeping oil and gas prices elevated and, in turn, pressuring energy‑sensitive sectors represented in the Ftse100.
Market sentiment was also influenced by political rhetoric in the region. Public statements about naval protection for tankers and strong warnings toward Iran have done little to reassure shipping companies and insurers given the practical challenges of escorting commercial traffic through contested waters. That gap between political assurances and operational feasibility has contributed to persistent volatility.
Investors have already shown risk aversion: the Ftse100 fell more than five percent to a deep weekly low last week as participants moved toward safe havens, and Asian markets recorded steep intraday losses in response to the surge in oil. For now, elevated energy costs present a tangible path to higher consumer prices and margin pressure for companies listed on the index.
More details are expected Wednesday at 2: 00 p. m. ET, when market summaries from the day’s trading will be available; if oil and gas prices settle lower by that update, some downward pressure on the Ftse100 could ease by the close.
