UK refineries asked to maximise jet fuel production amid growing supply fears

British refineries have been asked to maximise jet fuel supply as part of government contingency planning, amid growing fears the Iran war will force planes to be grounded.

Energy minister Michael Shanks said the government is closely monitoring UK jet fuel stocks and working with airlines, airports, fuel suppliers and other governments, as carriers face rocketing fuel costs as a result of the conflict.

Normal flows of fossil fuels from the Gulf have effectively been at a standstill since the war broke out, after the de facto closure of the important shipping channel, the strait of Hormuz, through which a fifth of the world’s oil and gas flows.

“UK airlines typically buy fuel months in advance, and aviation fuel suppliers hold bunkered stocks. The UK imports jet fuel supplies from a range of countries not reliant on the strait, including the United States,” wrote Shanks in a ministerial statement.

“Airlines UK have stated that ‘UK airlines continue to operate normally and are not experiencing issues with jet fuel supply.’ The government continues to work with partners to monitor and mitigate potential disruptions,” Shanks added.

There are now only four remaining refineries in the UK, after closures at the Grangemouth and Lindsey refineries in 2025.

The remaining UK refineries are: Fawley in Hampshire owned by ExxonMobil; Humber in Lincolnshire owned by Phillips 66; Valero’s Pembroke refinery in Wales; and Essar’s Stanlow site in Essex.

These sites produce a range of refined products including petrol, diesel, jet fuel and fuel oil to meet domestic demand and for export. The number of UK refineries has fallen from a peak of 18 in the 1970s, as has the UK’s output of petrol and diesel.

It came as global jet fuel shipments fell to the lowest recorded level last week. Just under 2.3m tonnes of jet fuel and kerosene were transported on ships in the seven days to 26 April, according to initial analysis by data company Kpler, which first began tracking shipments in 2017. The figure represents less than half the average weekly volume shipped before the war.

Airlines have insisted there are now no supply problems expected during their typical four-to-six week horizon, although some carriers have already announced flight cancellations, and have been lobbying for government help amid rising fuel prices and a possible supply crisis.