Global growth faces another external shock. The International Monetary Fund’s latest scenarios suggest that if energy and food prices stay elevated through 2026, world output could slip below 2% next year - a level the IMF describes as a close call with recession. For UK readers, this is not just a story about oil futures; it is a live question about household budgets, mortgage timing and SME margins.

Within that framework, the IMF trims its UK projection for 2026 to 0.8%, from 1.3% earlier, before a modest 1.3% expansion the following year if conditions stabilise. Among advanced economies, the Fund says Britain would be the most exposed to the current energy shock, reflecting import dependence and sensitivity to wholesale gas and oil costs that feed quickly into bills and transport.

Energy is the hinge. In the IMF’s severe case, crude averages about $110 per barrel this year and reaches $125 in 2027, pushing inflation as high as 6% in 2027 and forcing central banks to keep policy tighter for longer. Oil has already spiked towards $120 during the Iran conflict and slipped back to roughly $95 more recently, but the message is clear: volatility itself is costly for planning and pricing.

The geopolitics add heat but also require context. In a BBC interview, US Treasury Secretary Scott Bessent argued that accepting “a small bit of economic pain” is preferable to long‑term security risks from Iran’s programme, even positing the catastrophic impact of a nuclear strike on a Western capital. UK officials, however, state there is no current assessment that Iran is trying to target Europe with missiles, and previous BBC reporting has described the threat to London as remote. Readers should treat near‑term market turbulence and worst‑case rhetoric separately: policy aims to remove tail risks while economic forecasters are mapping plausible ranges.

For the Bank of England, the IMF’s severe path implies a tougher trade‑off. A stickier energy impulse would slow disinflation and could delay or limit rate cuts relative to what markets had pencilled in earlier this year. Conversely, if Middle East output and transit normalise by mid‑2026, the Fund still sees global growth near 3.1% for 2026 and 3.2% in 2027, a backdrop that would let Threadneedle Street ease with more confidence.

Household finances sit in the crosshairs. Petrol and diesel prices typically adjust within weeks when crude moves, while the Ofgem cap channels wholesale gas swings into quarterly bills. A higher‑for‑longer energy path would raise transport, heating and food distribution costs, compressing real disposable income even as wage growth cools. If energy markets calm, those same pass‑throughs work in reverse - just more slowly than most families would like.

SMEs should treat the IMF’s scenarios as working models. Finance directors can run three versions of 12‑month cashflow: a $95 baseline, a $110 adverse and a $125 severe. Stress‑test gross margins for energy‑intensive lines, refresh surcharge policies for logistics, and revisit hedging on power and FX where exposures are material. Many firms will find the cheapest “energy” is saved consumption: quick wins like heat‑loss fixes, motor controls and smarter scheduling can protect margins without big capex.

Trade frictions are not just about prices. With the Strait of Hormuz heavily disrupted, shipping times and insurance premia are in flux. Importers of chemicals, plastics and metals should assume intermittent delays and hold a little more buffer stock where working capital allows. Exporters into the Gulf may need alternative routings at short notice and should pre‑clear credit terms with customers in case deliveries slip.

Regional dynamics matter for the forward path. The IMF highlights that Saudi Arabia can reroute some flows via its East–West pipeline to the Red Sea, limiting the worst bottlenecks, while Qatar’s LNG hub at Ras Laffan has suffered strikes and is not expected to be fully operational for some time. The Fund sees most Middle East oil exporters recovering in 2027 if production and transport normalise over the coming months; that assumption weakens if damage proves deeper or the conflict drags.

Outside the region, forecasts are mixed. China’s 2026 growth is nudged down to 4.4% with 4.0% in 2027 unchanged, while Russia is set to expand by about 1.1% this year and next on stronger energy revenues. European officials have warned against easing sanctions on Moscow, arguing higher oil income simply funds further aggression. Policy divergence is likely to keep currency and bond markets choppy.

For UK markets, this sets up a familiar tug‑of‑war. Higher oil prices can lift parts of the FTSE through energy and miners even as domestic cyclicals struggle with weaker real incomes and dearer credit. Sterling’s path is equally two‑sided: a wider energy import bill is a headwind, but expectations of firmer Bank Rate would be a partial offset. That mix argues for selective positioning rather than broad risk‑on or risk‑off calls.

What to watch next is very practical. Any ceasefire or credible pathway to restoring Middle East energy exports would ease the worst of the IMF scenarios. On the domestic calendar, the next Bank of England communications, wholesale price prints feeding into the Ofgem cap, and fuel pump data will tell households and SMEs whether they face another squeeze or a gentler glide. Until then, planning off scenario bands - not single‑point forecasts - is the more resilient choice.