How the Iran conflict is driving a new cost shock for UK Manufacturing

As part of FRP’s Manufacturing Agenda, we’ve been tracking how geopolitical volatility is reshaping the cost base, resilience assumptions and forward planning of UK industry. The Iran conflict is a live example of how fast global shocks can cascade into UK manufacturing – not through direct trade links, but through the cost systems manufacturers depend on every day.

The Iran conflict isn’t just an energy story. For UK manufacturers, it’s a cost story.

The UK has limited direct trade exposure to Iran. But that’s not the right frame. The real question is how instability in the Gulf transmits through global systems that UK industry depends on every day, and right now there are three clear channels worth watching closely.

1. Energy prices – the most immediate hit

Oil and gas aren’t just fuels. They’re foundational inputs that run through almost every part of the manufacturing economy. When prices spike, the pain isn’t evenly distributed; it lands hardest on energy-intensive sectors like chemicals, glass, cement, aluminium and steel, where energy can account for 20–40% of total production costs.

The UK’s exposure here is real. Despite North Sea production and the shift toward renewables, British industry remains deeply connected to global gas markets – and those markets move fast when geopolitical risk rises. We’re already seeing upward price pressure. For manufacturers who haven’t locked in energy contracts, that means margin compression almost immediately. And passing costs through to customers? In many sectors, particularly where contracts are fixed or competition is fierce, that simply isn’t an option.

What makes this harder is timing. UK manufacturers have spent the last three years managing one of the most severe inflation shocks in a generation. Energy bills, raw material costs, wage pressures – many businesses have only recently started to rebuild margin. Another energy shock arrives with far less buffer than it would have a decade ago.

2. Petrochemicals – the hidden transmission channel

This one gets less attention, but it matters just as much. A huge proportion of industrial materials including plastics, synthetic fibres, industrial lubricants, solvents, adhesives and packaging are derived from oil and gas feedstocks. When energy markets tighten, the cost of these inputs rises across the entire manufacturing ecosystem, often with a lag of weeks or months.

This isn’t a niche issue. It cuts across automotive, consumer goods, pharmaceuticals, construction materials, food processing and industrial components. A car manufacturer uses petrochemical-derived materials in everything from interior components to seals, coatings and fluids. A packaging supplier faces rising costs on virtually every material they buy. The transmission is broad, and it compounds quickly when energy prices stay elevated.

For UK manufacturers, the challenge is that many of these input costs are priced globally. There’s no domestic alternative to fall back on, and the supply chains involved are long and complex. When prices move, they move everywhere at once.

3. Shipping and logistics – risk pricing before supply even breaks

The Strait of Hormuz is one of the most strategically important shipping corridors in the world. Around 20% of global oil flows through it, along with significant volumes of LNG and other cargo. Any escalation that raises the perceived security risk in the Gulf doesn’t need to physically disrupt supply to drive up costs – risk pricing does the work first.

Higher perceived risk means higher insurance premiums for tankers, elevated freight rates and, in some cases, longer routing to avoid danger zones. We saw this dynamic play out in the Red Sea disruptions of late 2023 and early 2024, when Houthi attacks forced major rerouting around the Cape of Good Hope, adding time, cost and complexity.

For UK manufacturers running lean supply chains – which many do, because holding excess inventory is expensive – any delays in component delivery can halt production lines. Higher freight costs hit margins directly. Longer lead times increase working-capital requirements at a moment when borrowing costs remain high.

What this means for UK industry – and the limits of policy

The UK doesn’t have a simple lever to pull here. These are global cost pressures flowing through integrated international markets, and government policy offers limited protection when they move quickly.

Support mechanisms such as energy cost relief or competitiveness schemes exist, but they were designed for structural issues, not fast-moving geopolitical shocks. Gaps in coverage are real, timelines are slow and qualifying isn’t straightforward for many manufacturers.

In practice, most businesses are on their own when a sudden spike hits. The firms best placed to navigate this are those that have invested in energy efficiency, locked in contracts at the right time, diversified suppliers and maintained enough financial headroom to absorb shocks. That’s not a counsel of perfection – it’s what resilience actually looks like. The businesses that haven’t done that work are the ones most exposed now.

The bottom line

The key risk from the Iran conflict for UK manufacturers isn’t supply collapse. It’s persistent cost-push inflation across energy, materials and logistics, landing at a moment when many businesses have limited capacity to absorb it.

If the situation stabilises, the impact may be manageable. If it doesn’t, this has the potential to be a meaningful headwind for UK industrial output through the second half of 2026 – and another test of which manufacturers have the resilience to weather it.