18th July 2026
For years, oil prices have risen and fallen with little more than a shrug from many people in the UK. Unless you filled your car with petrol every week or ordered heating oil for your home, the changes often seemed distant.
That may be changing.
After several nights of sustained fighting between the United States and Iran, together with severe disruption to shipping through the Strait of Hormuz, oil traders are once again asking a question they hoped had been left in the past:
Could oil reach $100 a barrel?
No one knows the answer. Markets can change direction quickly, especially if diplomacy succeeds. But history shows that prolonged disruption to one of the world's most important energy routes can have consequences that spread far beyond the Middle East.
Why Hormuz Matters
Around one-fifth of the world's traded oil normally passes through the Strait of Hormuz.
It is not just crude oil. Liquefied natural gas, refined fuels and petrochemicals also travel through this narrow stretch of water linking the Persian Gulf with the Arabian Sea.
Even if some tankers continue to sail, higher insurance costs, longer delays and the risk of further attacks can reduce supplies reaching world markets.
Sometimes it is not an actual shortage that moves prices—it is the fear that one may develop.
What Would $100 Oil Mean?
If Brent crude reached $100 per barrel and remained there for several weeks, the effects would gradually spread through the economy.
The first impact would probably be seen in fuel prices.
Petrol and diesel would become more expensive.
Haulage costs would rise.
Airlines would face higher fuel bills.
Farmers and fishing boats would pay more to operate machinery and vessels.
Manufacturers would see production costs increase.
Businesses rarely absorb all these extra costs. Instead, many eventually pass them on to customers through higher prices.
Rural Scotland Could Feel It More Than Most
For communities such as Caithness, Sutherland and much of the Highlands, higher oil prices can have a greater impact than in many urban areas.
Large numbers of homes are not connected to the mains gas network and rely on heating oil, LPG or electricity.
Long travel distances mean fuel is essential rather than optional. Deliveries to shops, farms and businesses cover hundreds of miles, making transport costs a significant part of everyday prices.
Fishing, agriculture and tourism—all important local industries—depend heavily on affordable fuel.
When diesel prices rise, almost every part of the rural economy feels the effect.
Inflation Could Return
Higher energy costs feed into almost everything we buy.
Food production becomes more expensive.
Building materials cost more to transport.
Parcel deliveries increase in price.
Even local councils face higher fuel bills for school transport, waste collection and road maintenance.
If enough prices rise together, inflation can begin climbing again after months of steady improvement.
That creates a difficult choice for central banks.
Instead of reducing interest rates to support economic growth, they may have to keep borrowing costs higher for longer.
That affects mortgages, business investment and household finances.
Could Governments Cushion the Blow?
Governments have several options, but none is painless.
They can release strategic oil reserves.
They can reduce fuel duties or postpone planned tax increases.
They can provide targeted support for vulnerable households.
Or they can simply allow markets to find a new balance.
Each option carries financial and political costs.
Meanwhile, central banks must decide whether rising inflation is likely to be temporary or more persistent.
What Should Households Watch?
Rather than focusing on dramatic headlines, there are several indicators worth keeping an eye on:
The daily Brent crude oil price.
Diesel prices, which often affect businesses first.
Heating oil quotations for rural areas.
Shipping news from the Strait of Hormuz.
UK inflation figures.
Government bond yields and mortgage rates.
These indicators often reveal where the economy is heading before most people notice the effects.
[b]A Crisis That Reaches Every Home[b/b]
Wars are measured in military victories and losses, but they are also measured in economic consequences.
A conflict thousands of miles away can influence the cost of heating a home in Caithness, filling a fishing boat in Scrabster, transporting goods to Wick or renewing a mortgage anywhere in Britain.
Whether oil reaches $100 or not is impossible to predict.
What is certain is that the longer disruption continues, the greater the risk that higher energy prices become embedded throughout the economy.
That is why investors, businesses and governments are watching the Strait of Hormuz almost as closely as the military commanders themselves.
The next few weeks could determine not only the course of the conflict but also the direction of inflation, interest rates and household budgets across the UK for the rest of the year.