The ongoing conflict involving Iran is beginning to reverberate through the UK economy, impacting everything from fuel prices to mortgage rates. As geopolitical tensions escalate, analysts are closely monitoring how long this situation persists and its subsequent effects on supply chains and consumer costs. Here’s a detailed analysis of the potential financial ramifications for households across Britain.
Rising Fuel Prices: The Immediate Impact
Motorists are already feeling the pinch as petrol prices climb. As of Tuesday, average petrol costs rose by 6.12 pence, reaching 138.95 pence per litre, while diesel surged by 12.74 pence to 155.12 pence, according to the RAC. Analysts highlight that a $10 increase in crude oil prices typically translates to an approximate 7 pence hike at the pump.
The volatility in crude prices, largely driven by the conflict and reactions from US authorities, suggests that petrol could soar to an average of 150 pence per litre if elevated oil prices persist. Although motoring organisations assure that fuel supplies remain ample, they are advising consumers to limit unnecessary journeys and adopt fuel-efficient driving habits to mitigate costs.
The repercussions of rising fuel prices extend beyond the pump. Higher transportation expenses for goods could lead to increased retail prices, particularly in the food sector, effectively affecting every consumer.
Mortgage Rates: A Shift in the Housing Market
Prior to the onset of hostilities, there was optimism regarding a decline in mortgage interest rates. However, the emergence of the conflict has led several major lenders to increase their rates. This shift is attributed to rising funding costs and a revised outlook for the base borrowing rate, which now seems unlikely to decrease as previously expected.
Currently, the average rate for a two-year fixed mortgage has risen to 4.93%, with the five-year fixed rate climbing to 5.03% as of March 10, marking the first time both figures have exceeded 5% since August last year. The market is also witnessing a decrease in product availability; on Monday alone, 330 mortgage options were withdrawn as lenders anticipate needing to reprice offerings at higher levels. Adam French, head of consumer finance at Moneyfacts, noted that such drastic measures indicate that funding costs have surged too rapidly for mere adjustments.
Energy Bills: A Complex Landscape
Consumers benefit from a price cap on gas and electricity bills set by Ofgem, which offers some protection amid rising costs. This cap, however, is temporary and does not encompass all households. The maximum unit price for those on variable tariffs will remain in effect until July, with a decrease anticipated in April.
The future of household energy bills hinges on developments in the wholesale energy market over the coming months. Should wholesale prices remain elevated, millions could face significant increases in their energy costs. The last spike in energy prices following the pandemic and geopolitical tensions necessitated government intervention via the Energy Price Guarantee, underscoring the fragility of the current situation.
For those reliant on heating oil—a necessity for many rural households—the absence of a price cap means they are particularly vulnerable to market fluctuations. Reports indicate that heating oil prices have more than doubled since the conflict escalated, with panic buying exacerbating supply issues. Emma Simpson, CEO of Rural Action Derbyshire, emphasised the urgency for those low on oil, as prices may not soon decline.
Chancellor Rachel Reeves has indicated a willingness to explore additional measures to support households reliant on heating oil, while competition authorities are scrutinising supplier practices to ensure fairness in pricing.
Inflation and Interest Rates: A Challenging Forecast
As of early March, the UK’s inflation rate, which measures the cost of living, was projected to align closely with the Bank of England’s target of 2% over the next five years, according to the Office for Budget Responsibility. However, the onset of the conflict has thrown these forecasts into disarray.

While some analysts predict that inflation might not return to the peak of 11.1% witnessed in October 2022, the uncertainty surrounding military and economic conditions complicates any attempts to provide accurate estimates. The Bank of England’s mandate to control inflation primarily through interest rates has now come under scrutiny, with expectations of rate cuts in March being reconsidered.
In this climate of uncertainty, while borrowing costs are anticipated to rise, the potential for slightly improved savings rates exists as consumers may turn to hoarding savings. However, rising living costs could dampen spending power and hamper broader economic growth.
Broader Economic Implications
The ramifications of the Iran conflict extend into leisure and travel sectors, with potential changes in holiday plans as jet fuel prices escalate. Although airlines often implement purchasing strategies to mitigate the impact of rising fuel costs, sustained high prices will ultimately force airlines to pass on these expenses to consumers through increased fares.
As the situation unfolds, the choices available for holidaymakers this spring and summer may be significantly constrained by rising costs.
Why it Matters
The financial repercussions of the Iran war are already being felt across multiple sectors, from fuel to mortgages and energy bills. As the conflict continues, the potential for long-term economic instability looms large, affecting the cost of living for millions. Households must prepare for an uncertain economic landscape characterised by rising expenses and constrained financial options, as geopolitical tensions reshape the UK’s financial trajectory.
