5% UK Inflation by December 2026? The Iran Shock Impact on UK CPI
Current position: UK CPI at 3.0% y/y (Feb print). March data (due 22 April) will show the first clear energy-driven leg-up.
Core drivers verified:
• Oil/tanker shock (late-Feb Iran conflict + Hormuz disruption): UK marginal delivered costs confirmed in $130–150/bbl range
• Indirect channels: haulage rates +6–10%, manufacturing PPI (plastics/chemicals) +5–10%
• Fertiliser shock: nitrogen prices up 30–39% (AN £521–530/t, granular urea £631/t). UK imports ~60% of needs
The fertiliser spike will feed directly into 2026 harvest costs and hit retail food prices from Q4.
Quantified pass-through to CPI (food = 8.7% basket weight):
• Direct energy/petrol: +0.5–0.8pp
• Indirect transport/contractors/manufacturing: +0.7–1.2pp
• Fertiliser → domestic food production: +1.2–2.1pp
→ Total uplift vs pre-shock path: +2.4–4.1pp by year-end
Revised forecast:
Dec 2026 CPI: 3.8–4.5% (central case ~4.1%)
Base case calc: pre-shock path ~2.0% + 3.1pp uplift
(energy 0.6 + indirect 0.9 + fertiliser 1.6)
Food inflation component: 5.5–7.5%
Bottom line: The combined oil + freight + fertiliser shock has turned 2026 into a sticky 4%+ regime through autumn/winter — not the clean disinflation previously expected.
5% inflation by December is now a credible ~35% probability risk.
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@guardian If you'd like to contribute to our next pet market report - send us your comments and pictures. What do you buy for your pet? What clothes do you buy for them? How much do you spend on them? Pet Xmas presents this year? Send your thoughts to [email protected]