The ongoing military conflict involving Iran has begun to reverberate through the UK economy, affecting everything from fuel prices to mortgage rates. As tensions escalate, consumers are left wondering how these changes will impact their household budgets and financial decisions. The extent and duration of these financial repercussions will largely depend on the conflict’s trajectory and the resilience of global supply chains.
Rising Fuel Costs: What Motorists Should Know
UK drivers are starting to feel the pinch at the petrol pumps, with average fuel prices experiencing notable increases. As of last Friday, petrol prices surged to an 18-month high of 140.6p per litre, which marks an increase of nearly 8p since the onset of the conflict. Diesel prices have also spiked, climbing approximately 17p to reach 159.2p per litre, according to the RAC.
This rise in prices has ignited a heated debate between fuel retailers and the government, particularly after the latter suggested that some companies might be profiting excessively from the oil price surge. Analysts have noted that a $10 increase in crude oil typically translates to a 7p rise at the pump. Given the current volatility in oil prices, average petrol costs could potentially reach 150p per litre if these elevated levels persist.
While motoring organisations assure consumers of available fuel supplies, they are advising individuals to limit non-essential journeys and adjust their driving habits to conserve fuel.
Mortgage Rates: A Shift in Trends
Before the eruption of hostilities, there was optimism surrounding a decrease in mortgage interest rates. However, the situation has now taken a sharp turn. Major UK lenders are raising their rates in response to rising funding costs and a shift in expectations regarding the base borrowing rate.

As of last Friday, average rates for two-year fixed mortgages climbed to 5.10%, up from 4.84% earlier in March, marking the highest level since July. Similarly, five-year fixed mortgages increased from 4.96% to 5.19%, the steepest rate since April. In uncertain economic climates, lenders often withdraw mortgage products from the market, limiting consumer options. Currently, over 500 residential mortgage products have been taken off the shelves, although there are still 7,147 options available.
Adam French, head of consumer finance at Moneyfacts, explains that pulling deals rather than merely adjusting prices often signals that funding costs have shifted too rapidly to accommodate gradual changes.
Energy Bills and Heating Oil: A Closer Look
Households may find some respite from rising gas and electricity costs, thanks to the energy price cap established by Ofgem, which governs variable deals in England, Wales, and Scotland. However, this cap has a limited duration and does not apply to all consumers. Although energy prices are set to decrease in April, the situation in the wholesale energy market leading up to late May will significantly influence household bills for the summer months.
A sustained spike in wholesale energy prices could lead to substantial increases in costs for millions of households. In the past, during periods of drastic price hikes, the government intervened with measures such as the Energy Price Guarantee. Energy Secretary Ed Miliband has indicated that intervention could occur if the situation necessitates it, although the decision will depend on the conflict’s broader impact.
Those relying on heating oil, commonly used in rural areas, are facing even steeper challenges, with campaigners noting that prices have more than doubled since the conflict began. With reports of panic buying, supplies are limited, prompting calls for government support.
Inflation and Economic Outlook: A Complex Picture
At the beginning of March, the Office for Budget Responsibility (OBR) forecasted UK inflation to stabilise around 2%, but the recent military developments have clouded this outlook. Analysts now believe that the earlier projections may be overly optimistic, given the volatile geopolitical landscape.

While inflation is unlikely to reach the unprecedented peak of 11.1% observed in October 2022, the conflict’s impact on global food supplies—particularly those related to Ukraine—adds another layer of uncertainty. The Bank of England’s primary goal is to bring inflation close to 2%, but recent shifts have cast doubt on the likelihood of interest rate reductions that many had anticipated.
Broader Implications: Leisure and Spending
The conflict’s global ramifications will also affect discretionary spending. As jet fuel prices continue to rise, holidaymakers may face increased flight costs, potentially limiting their travel options for the upcoming spring and summer seasons. Airlines often hedge against such price fluctuations, but prolonged high fuel costs will inevitably lead to higher fares.
Why it Matters
The financial implications of the conflict in Iran are multifaceted and extend beyond immediate price increases at the petrol pump or mortgage rates. As consumers grapple with a rising cost of living amidst geopolitical tensions, understanding these dynamics becomes crucial for navigating personal finances. The interplay of fuel prices, housing costs, and energy bills could lead to significant shifts in household budgets, influencing spending patterns and economic growth in the UK. As the situation evolves, consumers will need to stay informed and adapt to changing financial realities.