Will there be a UK fuel shortage in 2026?

As of July 1, 2026, the UK is not experiencing widespread retail fuel shortages — petrol and diesel remain available at the pump across the country. UK aggregate jet-fuel days-of-cover drifted down from roughly 32 days at the start of March to about 23-24 days by mid-June, then began gently rebuilding — reaching an estimated 26.5 days by July 1 as the Jun 17 Islamabad Memorandum and the Jun 30 Doha coordination talks both held, keeping cover above the IEA's 23-day threshold. A weekend kinetic exchange (Jun 25-28) tested but did not break the recovery. With Hormuz transit continuing to strengthen, the base case is that workaround supply (imports from North America and Africa, the DfT Jet A rule relaxation, hedging, pre-cut capacity) keeps cover above the threshold and rebuilds it further through the autumn. Three scenarios bracket the year-end outcome.

Will UK flights be cancelled in summer 2026?

Through mid-June, the UK Department for Transport's analysis of OAG schedules confirmed that only about 1,200 UK departures were cancelled May 3 to June 14 — less than 1% of planned flights, contradicting the more alarmist Cirium-driven headlines about imminent network collapse. Heathrow saw the largest absolute impact (846 May cancellations affecting 151,198 seats per Cirium); Lufthansa's 20,000 cancellations through October stand. Major carriers (Lufthansa, KLM, Ryanair, British Airways) have continued to tell markets they expect stable summer supply via North American and African imports plus hedging, and no fresher cancellation data has surfaced since — read as continued stability rather than a data gap. Cancellation outcomes for the rest of 2026 range from a network-holds case (1.5–2% summer cancellations) to a broader-crack case (10–15%) depending on whether the jet-fuel threshold is breached and whether Hormuz recovery holds.

What is the IEA 23-day jet fuel threshold?

The 23-day threshold is the level of inventory days-of-cover that the International Energy Agency identifies as the operational trigger for physical airport jet-fuel shortages — below 23 days, refuelling reliability degrades and NOTAMs (notices to airmen) typically follow. Airports Council International (ACI) Europe formally invoked the threshold in its April 9 letter to EU Transport Commissioner Apostolos Tzitzikostas, warning that more than 100 EU airports faced systemic jet fuel shortage if the Strait of Hormuz did not reopen within three weeks, with many hubs already at 8–10 days of stock. Goldman Sachs's May 6 projection then identified the UK as the European market most at risk of breaching the threshold in June 2026, primarily because UK aviation is heavily import-dependent for refined product.

Is petrol rationed in the UK right now?

No. As of early June 2026 the UK is not formally rationing retail petrol or diesel. The UK Transport Secretary Heidi Alexander has publicly stated there are 'no immediate supply issues' but that the government is 'preparing now to give families long-term certainty and avoid unnecessary disruption at the departure gate this summer.' The principal measure to date is the May 2 Department for Transport slot-rule consultation covering Heathrow, Gatwick, Stansted, Manchester, Luton, London City, Birmingham and Bristol — which lets airlines hand back or consolidate summer flights without losing next-season slots. That is a flexibility mechanism, not a rationing decree.

What does "UK Day +N" refer to?

Day +N is GEF's counter for days past the May 4, 2026 'cliff edge' that Ryanair CEO Michael O'Leary publicly identified as the point at which UK jet-fuel reserves would begin to bite operationally. As of July 1, 2026, the UK is at Day +58 past that cliff — and the operational reality so far has been milder than O'Leary's framing suggested: less than 1% of planned UK departures were cancelled through mid-June, the four major London airports (LHR/LGW/STN/LTN) have issued no fuel NOTAMs, and jet-fuel cover has begun gently rebuilding above the IEA threshold. The Jun 17 Islamabad Memorandum and the Jun 30 Doha coordination talks have firmed the network-holds base case further, surviving a Jun 25-28 kinetic test without reversing. The Day +N counter tracks how long the post-cliff workaround has held — the longer it holds, the more credible the base case becomes.

Shortages United Kingdom 2026 Forecast

UK Jet Fuel & Road Fuel — 2026 Three-Scenario Forecast

UK jet-fuel days-of-cover from March through year-end vs. the IEA 23-day operational threshold, re-weighted after the US-Iran interim deal: network-holds is now the base case, with the Goldman threshold-breach projection and a broader retail crack as lower-probability paths.

Forecast Refreshed July 1, 2026

UK live status Airports Travel guidance Timeline 2026 Forecast

UK jet-fuel days-of-cover in 2026: observed to July 1, plus three forecasts to year-end

Y-axis is days of jet-fuel inventory cover at UK aggregate level. The 23-day line is the IEA's operational threshold — below it, refuelling reliability degrades and physical airport shortages start; above it, the system can absorb demand spikes. Solid line is observed March–Jul 1 (confirmed) plus an estimated Jul 1–15 extension (no fresh IATA/DfT print found, inferred from the confirmed Hormuz transit collapse); dashed lines are three REVISED modelled scenarios for Jul 15–Dec, rebuilt Jul 15 after the Jul 7-14 reversal. REBUILT Jul 15: the "network holds" base case this chart carried through early July required Hormuz transit to keep strengthening — it did the opposite. A Jul 7 vessel-strike incident near Oman ended the ceasefire; CENTCOM struck Iran three nights running; Kpler-tracked strait crossings collapsed to 7-14 ships/day from 25; the US Navy blockade was reimposed Jul 14; GEF has held Hormuz at CRITICAL since Jul 10. The scenario weights below have been re-derived accordingly — "threshold breach" is now the base case, not the tail.

One data point = the estimated UK aggregate jet-fuel inventory expressed as days of forward demand cover, drawing on IATA Jet Fuel Monitor (weekly), ACI Europe stock estimates, DfT operational reporting, and Cirium flight-schedule data. Individual airports vary widely; major hubs (LHR, LGW, MAN) sit modestly above the aggregate, secondary fields modestly below. No UK-specific developments were found in a Jul 1 re-scan beyond the general price/transit trend — the absence of fresh NOTAM or cancellation reporting is itself read as continued stability, not as a data gap.

Where each metric lands by December 31, 2026

Today (Jul 15) — estimated

~25 days

Last CONFIRMED print: ~26.5 days (Jul 1). No fresher IATA/DfT print found as of this rebuild -- the ~25-day figure is inferred from the confirmed Kpler transit collapse (25 to 7-14 ships/day since Jul 7), not a direct observation. Still above the IEA 23-day threshold, but the margin is now uncertain rather than confirmed.

Scenario 1 — Network holds

28–30 days

DEMOTED to ~20% (was the 65% base case). This path required Hormuz transit to keep strengthening through July -- it did the opposite (ceasefire ended Jul 7, US strikes on Iran three nights running, blockade reimposed Jul 14). Kept as a live minority path, not the central case.

Scenario 2 — Threshold breach

15–21 days

NEW BASE CASE, ~55% (was 24%). Cover dips below 23 days by late July, troughs near 15 days late September -- deeper than the prior model's 18-day trough -- and only partially recovers to ~21 days by December, staying below the IEA threshold at year-end.

Scenario 3 — Broader retail crack

9–13 days

RAISED to ~25% tail (was ~11%). The Houthis formally entering the war Jul 14 and threatening Bab el-Mandeb, plus the confirmed six-country barrage, already resemble the "fresh kinetic shock" this scenario described. Jet inventory troughs deeper, ~9 days end-Sep (below ACI's Apr 9 hub-level 8-10 day warning). Cancellations 10–15%, road-fuel availability slips toward ~78% by Q4 — petrol stations begin reporting shortages.

Background reference

5-yr norm: 35 days
IEA threshold: 23 days

5-yr seasonal norm for UK jet-fuel cover sits around 35 days. The IEA 23-day threshold is the operational trigger for physical airport shortages (per ACI Europe's Apr 9 letter to the EU Transport Commissioner).

Q2 2026 close

Worst quarterly
decline since 2020

Brent and WTI both fell roughly 30% over Q2 as the Hormuz reopening unwound the war premium — the crude backdrop against which UK jet-fuel cover is now gently rebuilding.

MarAprMayJunJulAugSepOctNovDec

Jet-fuel days-of-cover — observed

Scenario 1: Network holds

Scenario 2: Threshold breach

Scenario 3: Broader retail crack

Forecast model · GEF supply-chain analysis · observed Mar–Jul 1 from IATA Jet Fuel Monitor, ACI Europe estimates, DfT operational reporting, Cirium flight data (Jul 1-15 extension inferred, not confirmed) · scenarios are illustrative, not guarantees · REBUILT Jul 15 after the Jul 7-14 Hormuz reversal (base case shifted from network-holds to threshold-breach) global-energy-flow.com · July 15, 2026

Reading the chart. The solid blue line is the observed UK aggregate jet-fuel days-of-cover from March 1 -- when the Strait of Hormuz closure first began propagating through European refining margins -- through July 1 (the last confirmed print), with a dashed extension to July 15 representing an inferred, not confirmed, further decline. Cover drifted from roughly 32 days at the start of March to about 23-24 days by mid-June, briefly rebuilt to ~26.5 days by July 1, then an estimated ~25 days by July 15 as the confirmed Hormuz transit collapse (Kpler: 25 to 7-14 ships/day since Jul 7) makes further erosion the more likely reading -- still above the IEA's 23-day operational threshold (the red horizontal line), but the margin is now uncertain. REBUILT Jul 15: the three dashed paths below have been re-derived from scratch, not adjusted from the prior model. Green if the workarounds that held through June somehow resume holding despite the Jul 7-14 reversal (Scenario 1, now a minority path); amber if the threshold breach that Goldman Sachs flagged back in May is now underway and deepens through the autumn (Scenario 2, the new base case); or red if the Houthi entry into the war and the broader Gulf escalation crack aviation supply chains and spread to UK retail road fuel (Scenario 3, a materially larger tail than before). The "today" line marks where the modelled paths begin diverging from the observed line.

Scenario 1Network holds -- now a minority path (~20%, demoted from the 65% base case). This path required Hormuz transit to keep strengthening through July as it had through most of June. It did the opposite: a Jul 7 vessel-strike incident near Oman ended the ceasefire, CENTCOM struck Iran three consecutive nights, Kpler-tracked strait crossings collapsed to 7-14 ships/day from 25, and the US Navy blockade was reimposed Jul 14. The DfT's last confirmed schedule analysis (through Jun 14) showed under 1% of planned flights cancelled, and major carriers had been telling markets they expected stable summer supply via non-Gulf imports and hedging -- Easyjet reported 70% of summer 2026 hedged, Lufthansa's 20,000 already-announced cancellations were absorbing the demand bulge they were intended to. Nothing in that operational picture has been directly falsified; it simply no longer has a plausible mechanism given the confirmed Hormuz reversal. If this path holds anyway, cover would gradually rebuild to about 28-30 days by December, still below the 5-year norm of 35 days and below the prior model's 31-day endpoint, reflecting reduced confidence even within this scenario.

Scenario 2Threshold breach -- the NEW base case (~55%, up from 24%). This is now the path the confirmed data support, not a downside case. Iran's post-MoU hardening around transit fees and co-regulation, which had been the main channel for this scenario, has been overtaken by events -- the ceasefire itself ended Jul 7 and the blockade returned Jul 14, a more direct and severe mechanism than the fee dispute this scenario originally modelled. UK aviation's heavy dependence on imported refined product (Britain refines a smaller share of its own jet fuel than France or Germany) leaves it exposed. Aggregate cover dips back below 23 days by late July, troughs at about 15 days in late September -- deeper than the prior model's 18-day trough, reflecting the more severe transit collapse (7-14 ships/day now vs the 7-ship one-day low the prior model was built around) -- and only partially recovers to about 21 days by December, still below the IEA threshold at year-end. NOTAMs become likely at multiple secondary airports during the trough; cancellations climb toward 6-9% of scheduled departures, higher than the prior model's 4-7% range.

Scenario 3Broader retail crack -- a materially larger tail (~25%, up from 11%). The scenario this branch always described -- "a fresh kinetic shock beyond the scale of the Jun 25-28 exchange" combined with the closure extending toward Bab el-Mandeb -- is close to what has now actually happened: Yemen's Houthis formally entered the war Jul 14 with a stated intent to threaten Bab el-Mandeb alongside Hormuz, and Iran struck six Gulf states (not three, per a same-day correction) on Jul 12. This is no longer a low-probability tail describing a hypothetical escalation; it is a live, unfolding one, which is why the weight has risen from 11% to roughly 25% rather than being retired. UK jet-fuel cover would degrade faster than in Scenario 2 -- troughing at about 9 days in late September, below even ACI Europe's April 9 hub-level warning of 8-10 days at the worst-affected hubs. Cancellations would likely reach 10-15% of scheduled departures; multiple airports would issue NOTAMs. Critically, the same conditions that crack aviation also reach retail: with refining throughput cut and Russian product withdrawn under the EU's Jun 17 ban, UK petrol and diesel availability could slip toward 78% of normal by Q4, with the first reports of intermittent station outages. By December, jet cover would recover only to about 13 days -- still deep in physical-shortage territory.

UK factorWhy the UK is different from the EU forecast. The EU forecast on this site tracks aggregate petrol and diesel availability as a percentage of normal supply -- appropriate because the EU's stress is currently broad and road-fuel-led (Germany's PCK Schwedt feedstock cut among others). The UK's stress is narrower and aviation-led. UK retail road fuel has held throughout the crisis -- Transport Secretary Heidi Alexander has said publicly there are "no immediate supply issues" -- but the UK aviation system is the European market analysts have flagged as most likely to break first, and under the new base case (Scenario 2) that break is now the modelled central path, not a tail risk. UK Day +N -- the count of days past Ryanair CEO Michael O'Leary's May 4 cliff edge -- is the operational counter on the parent page; as of today (Jul 15, 2026) it stands at Day +72. Unlike the prior model, a growing Day +N no longer straightforwardly signals accumulating credibility for the network-holds case -- the underlying Hormuz driver, not the absence of an aviation-specific breach, is what moved this cycle.

MethodThis is a scenario forecast, not a prediction. The observed Mar-Jul 1 line is built from IATA Jet Fuel Monitor weekly prints, ACI Europe stock estimates, DfT operational reporting of schedule cancellations, and Cirium airport-level cancellation data; the Jul 1-15 extension is an inference from the confirmed Hormuz transit collapse, not a fresh print of the underlying metric itself, and is labelled as such throughout this page. The Jul 15-Dec branches are illustrative model paths, rebuilt from scratch on this date, not adjusted from the prior version; the real outcome will depend on whether the Hormuz blockade eases or hardens further, whether the Houthi threat to Bab el-Mandeb converts to an actual shipping strike, August weather (a hot August lifts jet demand further), and refinery uptime in the North Atlantic basin. Originally built around the Goldman Sachs May 6 jet-fuel inventory projection identifying the UK as the European market most at risk of a June threshold breach; that breach did not materialize by June, the base case shifted to network-holds as Hormuz transit strengthened -- and has now shifted back, following the Jul 7-14 reversal. Sources: IEA Oil Market Report (May 2026), IATA Jet Fuel Monitor (weekly, last confirmed print wk ending Jul 1 at $116.63/bbl; no fresher print found as of this rebuild), ACI Europe letter to EU Transport Commissioner Apr 9, Goldman Sachs May 6 note, UK Department for Transport schedule analysis (through Jun 14, no fresher cancellation data found), Cirium UK cancellations dataset, GEF's own Hormuz/six-country-barrage coverage (Jul 12-15). Per-pin detail and the live UK aviation watchlist at global-energy-flow.com/shortages/united-kingdom/.

Related: the US gas-price + SPR forecast tracks AAA pump price alongside the Strategic Petroleum Reserve drawdown (three scenarios $3.50–$5.20); the Australia petrol & diesel forecast tracks the fuel-excise step-down and the Geelong refinery restart (two scenarios); the EU petrol & diesel availability forecast covers continental Europe with a different metric (% of normal road-fuel supply). See also the live global shortage tracker, the EU gas storage trajectory, and the Strait of Hormuz status page.