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The recent surge in fuel prices across the UK is primarily attributed to escalating oil costs rather than any significant increase in retailer profit margins, according to findings from the Competition and Markets Authority (CMA). The watchdog’s report reveals that fuel margins have remained relatively stable since the onset of the conflict in the Middle East on February 28, 2026.
Fuel Margins Remain Stable
The CMA has disclosed that the difference between the wholesale prices that retailers pay for fuel and the prices they charge consumers—known as fuel margins—has been “broadly unchanged” since the conflict began. Although there was a noted increase in fuel margins for a minority of retailers in March, the overall trend indicates that these margins are consistent with historical averages, reinforcing the notion that current price hikes are linked to external oil market pressures rather than opportunistic pricing strategies by retailers.
In March, fuel margins reached approximately 107p per litre, mirroring figures from the previous year, which highlights the ongoing concerns regarding competitive pressures within the fuel retail sector. The CMA’s findings suggest that while some retailers may be capitalising on the situation, the overall market remains tight, necessitating further scrutiny of pricing practices.
Oil Prices Hit Highest Levels Since 2022
The volatility of global oil markets has been a significant driver behind the escalating fuel prices. On Thursday, Brent crude oil prices peaked above $126 (£94) per barrel, a level not seen since 2022, amidst speculation that US President Donald Trump may intensify military actions related to the Iran conflict. Such geopolitical tensions have resulted in restrictions on tanker movements through the strategically vital Strait of Hormuz, contributing to supply chain disruptions and, in turn, higher fuel costs at the pump.
As a result, the average price of petrol and diesel in the UK has risen by 24p and 47p per litre, respectively, compared to pre-conflict levels. This increase underscores the direct correlation between oil prices and consumer fuel costs, as fluctuations in the global market invariably impact local pricing.
Local Price Variations Offer Potential Savings
The CMA also pointed out the presence of “significant local price variations” across the UK’s fuel market, suggesting that motorists could save up to £9 on a full tank if they take the time to shop around. This disparity highlights the importance of competitive dynamics in the retail fuel sector, which the CMA continues to monitor closely.
Sarah Cardell, the chief executive of the CMA, emphasised the burden that rising fuel prices place on households and businesses. She stated: “The conflict in the Middle East has driven sharp increases in road fuel prices, putting real pressure on households and businesses across the UK. The CMA’s job is to ensure these rises reflect genuine cost pressures—especially given our previous work showing competition among fuel retailers isn’t as strong as it should be.”
Vigilance and Future Monitoring
In light of these developments, the CMA has committed to maintaining vigilant oversight of the market to ensure that any reductions in oil costs are promptly reflected in retail fuel prices. The authority’s ongoing scrutiny aims to foster a competitive environment that ultimately benefits consumers, ensuring they are not subject to undue financial strain during periods of market volatility.
Why it Matters
The implications of these findings are profound, as they highlight the complex interplay between geopolitical events, global oil prices, and local retail practices. As fuel prices continue to exert pressure on UK households and businesses, understanding the root causes of these increases becomes imperative. The CMA’s role in monitoring and regulating the market is crucial in safeguarding consumers from exploitative pricing while ensuring that the effects of external shocks are transparently communicated and addressed. In a landscape marked by uncertainty, the resilience of the fuel retail sector and its ability to respond to market changes will be pivotal in shaping the economic landscape in the months ahead.