Oil and gold prices have jumped after US officials said an Israeli missile had struck Iran.
Brent crude, the international benchmark, rose by 1.8% to $88 a barrel, while gold briefly came close to a record high before falling back to nearly $2,400 an ounce.
Investors have been closely watching Israel’s reaction to Iran’s direct drone and missile attack last weekend.
There are concerns a worsening conflict in the Middle East could disrupt oil supplies.
Oil prices had jumped by as much as 3.5% initially. However, gains receded after Iranian state media claimed that there was “no damage” in Isfahan province, where there had been reports of explosions.
Sharp and sustained rises in oil prices risk fueling inflation. Countries are heavily reliant on the commodity, which is used to produce fuels such as petrol and diesel.
Fuel and energy prices have been a major driver behind the higher cost of living worldwide in the past couple of years.
Iran is the seventh-largest oil producer in the world
Randeep Somel, fund manager at M&G Investment Management, told the BBC’s Today programme: “The concern for markets would mainly be the inflationary one, that this would add to inflation.”
While the pace of inflation has been slowing, in the UK it is still above the Bank of England’s 2% target, and some economists have forecast that a cut to interest rates may not happen until summer or later on in the year.
“In the UK, the inflation rate is still around 3.2%—still someway off the target—and it is becoming a bit of a concern for policymakers,” said Mr Somel.
“It is good to see that this hasn’t escalated any further and that hopefully, the disruption to markets is short-lived.”
The price of gold often rises at times of uncertainty as it is seen as a safe investment.