Oil Reserves Monitor · United Kingdom

The UK's emergency oil stocks: who holds them, how long they last and what happens in a shortage

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Symbolic image: oil storage tanks representing the UK's compulsory emergency stocks

The UK has no government-owned strategic petroleum reserve: fuel companies hold its emergency oil under a legal Compulsory Stocking Obligation, and at the end of June 2026 the UK held 10 million tonnes of oil stocks, 2.4 per cent less than a year earlier, which the government says is “more than meeting” the IEA's 90 days of net imports (DESNZ, Energy Trends, 29 September 2026). No exact day count is published; Energy Voice put the stock at 76.6 million barrels in March. Here is how the obligation works, what the UK gave to the 2026 IEA release, who pays, and which powers ministers hold if supply really runs short.

1. Does the UK have a strategic petroleum reserve?

Not in the American sense: the UK government owns no oil and has no central stockholding agency; companies that supply more than 50,000 tonnes a year must hold emergency stocks themselves (IEA, United Kingdom's legislation on oil security). The United States keeps crude in government caverns, 282.6 million barrels in the week to 23 October 2026 (EIA), and Germany and Spain run dedicated agencies (EBV, CORES). The British system rests on the Energy Act 1976 and the Oil Stocking Order 2012 (SI 2012/2862) and is overseen by the Department for Energy Security and Net Zero (DESNZ). The obligation is 67.5 days of domestic net consumption, 61 days plus 10 per cent, and at least 22 of those days must be held as finished products. Fuel Oil News reported in March 2023 that refiners carry 67.1 days and importers and wholesalers 58 days.

At the end of June 2026 the UK held 10 million tonnes of oil stocks, 2.4 per cent less than a year before; physical stocks held within the UK were 2.6 per cent lower, mainly because of lower gas/diesel oil and refinery stocks of primary oils (DESNZ, Energy Trends September 2026, 29 September 2026). Three months earlier, at the end of March, the figure was 10.2 million tonnes, 2.8 per cent below a year before, with physical stocks in the UK down 5.6 per cent after the Grangemouth and Lindsey refineries closed in 2025 (DESNZ, Energy Trends June 2026). In March, Energy Voice put total UK stocks at about 76.6 million barrels. We found no published count of storage sites. The concept itself is explained in our glossary under strategic reserve.

2. How many days of fuel does the UK have?

The government publishes no day count; its latest statement is that the 10 million tonnes held at the end of the second quarter of 2026 were “more than meeting the 90-day net import requirement set by the IEA” (DESNZ, 29 September 2026). The IEA publishes monthly day counts for its members in an interactive tool (updated 12 August 2026) from which we could not extract a UK value, and Eurostat has not covered the UK since Brexit. Two measures are easily confused. The IEA counts days of net imports; because North Sea output covers part of UK demand, the same stock stretches over more import days than consumption days. Against total demand, our own rough calculation gives about 51 days: 76.6 million barrels divided by roughly 1.5 million barrels a day (both from Energy Voice, March 2026). That is neither an official figure nor the legal test.

CountryStock, in that country's own measureAs ofSource
United Kingdom10 million tonnes, which the government says is “more than meeting” the IEA's 90 days of net imports; no exact day count publishedend of Q2 2026DESNZ, Energy Trends September 2026
United States282.6 million barrels in the SPRweek to 23 Oct 2026EIA Weekly Petroleum Status Report (28 Oct 2026)

For comparison, EU countries reporting to Eurostat stood at 81.1 days (Ireland), 87.9 (France) and 91.7 (Germany) in June 2026 (Eurostat). Why the counts differ from country to country is explained on the 90-day rule, and every country is listed in days on the Oil Reserves Monitor overview.

3. What did the UK release in 2026, and how?

The UK pledged 13.5 million barrels to the IEA's collective action on 12 March 2026; the IEA's confirmed table of 19 March lists 14.0 million barrels, all from obligated industry stocks: 4.3 million of crude and 9.7 million of products. Ed Miliband's written statement, repeated in the Lords by Lord Whitehead, read: “The UK will contribute the requested 13.5 million barrels, reflecting our share of oil consumption.” The gap of 0.5 million barrels is not explained anywhere we could find; we treat the IEA figure as the confirmed one. The statement named no mechanism, no number of days and no end date.

ExplainerThe UK releases oil by lowering an obligationHow a release works when there is no government tank
No state stocksThe government owns no oil, so there is no tank to open.
Obligation loweredThe Secretary of State cuts the obligation through legally binding directions.
Surplus releasedCompanies can then release surplus stocks to the market.
Supply unaffectedDomestic supply levels are reported not to be affected.
Graphic: Global Oil Shock, simplified

The mechanism follows from the system, because there is no government tank to open. Under the standard procedure, the Secretary of State lowers the obligation on companies “set out in legally binding directions, thus enabling the surplus stocks to be released to the market” (IEA). Anadolu Agency reported that the UK “will reduce its emergency oil obligations rather than physically release stocks” and that this “would not affect domestic supply levels”. By how many days the obligation was cut, and for how long, has not been published: we found no direction and no DESNZ notice. How the whole action of 426 million barrels was shared out is on IEA release 2026.

4. Who pays for the UK's oil stocks?

The obligated companies pay, and there is no separate levy: the government's 2013 impact assessment called the costs “non-transparent and largely woven into every day operating costs” (DECC, 13 August 2013). No official pence-per-litre figure exists. The same assessment assumed £242 per tonne to build new storage and £31 per tonne a year to run it; those are modelling inputs, not actual costs. Continental systems are easier to price, because an agency charges a visible fee:

ExplainerUK stock costs sit inside operating costsWho pays for emergency stocks, UK versus continental systems
United KingdomThe obligated companies themselves hold the stocksWoven into everyday operating costs, no separate levyNo official pence-per-litre figure exists
Continental systemsMostly an agency or committee holds themAn agency charges a visible feeA fee per tonne or per litre can be quoted
Graphic: Global Oil Shock, simplified
CountryWho holds the stocksObligationCost to fuel users
United Kingdomcompanies (Compulsory Stocking Obligation)67.5 days of consumptionno separate levy
GermanyEBV agency, 100%90 days of net imports€3.56 per tonne (EBV), about 0.3 euro cents per litre of diesel or heating oil (German economy ministry, BMWE)
Franceoperators, CPSSP committee, SAGESS29.5% of the previous year's fuel salesabout 0.75 euro cents per litre (SAGESS management cost, per its chief executive, 8 April 2026)
SpainCORES 42 days, industry 50 days92 days of salesabout 0.37 euro cents per litre of diesel and 0.35 of petrol (our calculation from the 2026 CORES fees, assuming CORES holds 42 days; actual days vary by company)

How much diesel, heating oil and jet fuel the UK's European neighbours hold is on diesel, heating oil and jet fuel stocks.

If you heat with kerosene, the reserve that matters most this winter is your own tank.

Check how long it lasts

5. What would happen in a real fuel shortage, and what is being debated?

Beyond lowering the stocking obligation, the Energy Act 1976 lets ministers “prohibit or restrict the supply of oil stocks to specified persons or to require the supply of oil stocks to specified persons” (IEA). The National Emergency Plan for Fuel (NEP-F) lists the tools: a Competition Act exemption for the industry, the Reserve Tanker Fleet and military tanker drivers, relaxed drivers' hours, designated filling stations, bulk and commercial distribution schemes, an allocation scheme for crude and imported products, and a Maximum Purchase Scheme that limits retail road-fuel sales (GOV.UK, April 2024). The plan names no pound or litre limit. Regit reported on 10 April 2026 that a cap of about £30 per visit was under consideration; that figure appears only in the press, not in the official summary. In the Lords on 28 April, Lord Whitehead said the government would use “the least invasive measures first” and added: “we are not in this situation”. How rationing works: fuel rationing.

The live question is a second release. France's President Macron wants to convene the G7 to consider one (World Oil, 18 September); we found no UK position. The IEA said on 21 July that about 290 million barrels had been released and that members still held over 1 billion barrels of government-controlled stocks.

DateHeadline or eventSource
11 Mar 2026“UK joins record 400m barrel IEA emergency oil stock release”Energy Voice
12 Mar 2026Written statement: UK participation in the IEA coordinated oil stock release, 13.5 million barrelsUK Parliament (HLWS1398)
19 Mar 2026IEA confirms country contributions: UK 14.0 million barrels from industry stocksIEA
10 Apr 2026“UK petrol and diesel rationing plans reviewed: what a £30 limit could mean”Regit
28 Apr 2026Lords debate on the National Emergency Plan for FuelHansard
30 Jun 2026Energy Trends: 10.2 million tonnes held at the end of Q1DESNZ
29 Sep 2026Energy Trends: 10 million tonnes held at the end of Q2, 2.4% lower than a year earlierDESNZ
21 Jul 2026About 290 million barrels released so far; over 1 billion barrels of government-controlled stocks leftIEA
18 Sep 2026“Macron calls G7 meeting to consider new strategic oil stock release”World Oil

How to cite: Global Oil Shock (Jörg Dässler), “UK Strategic Oil Reserves 2026: 10 Mt, No State SPR”, as of 4 Nov 2026, https://globaloilshock.com/en/strategic-oil-reserves/united-kingdom/

6. Frequently asked questions

Does the UK have a strategic petroleum reserve?
Not a government-owned one. Emergency oil is held by fuel companies under the Compulsory Stocking Obligation; there are no state stocks and no central agency (IEA). At the end of June 2026 the UK held 10 million tonnes of oil stocks (DESNZ, 29 September 2026).
How many days of fuel does the UK have?
No exact figure is published. DESNZ says the 10 million tonnes held at the end of Q2 2026 are “more than meeting” the IEA's 90 days of net imports (29 September 2026). Against total demand, our own rough calculation gives about 51 days (76.6 million barrels at about 1.5 million a day, both from Energy Voice), which is not an official count.
Did the UK release oil from its reserves in 2026?
Yes: 14.0 million barrels in the IEA table (13.5 million announced), delivered, according to Anadolu Agency, by lowering the obligation on companies rather than by physically releasing stocks. The size of the cut in days and its dates have not been published.
Will fuel be rationed in the UK?
We found no evidence of rationing in 2026. The emergency plan contains a Maximum Purchase Scheme, but on 28 April 2026 Lord Whitehead told the Lords “we are not in this situation” and that the government prefers “the least invasive measures first”. The £30 cap reported by Regit in April appears only in the press.
Who pays for the UK's oil stocks?
The obligated companies, inside their normal operating costs. There is no separate levy and no official pence-per-litre figure (DECC impact assessment, 2013).
Why is the UK missing from the Eurostat figures?
Eurostat reports emergency stock days for EU member states under Directive 2009/119/EC, and the UK left the EU. Its benchmarks are the IEA's 90 days of net imports and its own rule of 67.5 days of consumption.

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