UK Construction Output Hits Six-Year Low as Mideast Conflict Drives Up Fuel and Material Costs

The United Kingdom construction sector recorded its sharpest output decline in six years during May 2026, as the ongoing Middle East conflict continued to disrupt global shipping lanes and push fuel and raw material costs higher across the supply chain.

According to S&P Global, the UK Construction PMI fell to 38.2 in May, down from 39.7 in April, marking the seventeenth straight month below the neutral 50.0 threshold that separates growth from contraction. The reading represents the steepest drop in new work since the start of the pandemic, with economic uncertainty and rising inflation in the wake of the conflict cited as the main triggers. Elevated borrowing costs added further strain on market conditions.

The damage extends well beyond British borders. The eurozone Construction PMI improved slightly to 43.7 in May from 41.7 in April, yet still pointed to a sharp contraction in activity. This follows a steady deterioration through the spring, with the eurozone index sitting at 44.6 in March before sliding further. New orders across the bloc fell sharply, and firms repeatedly blamed difficulty sourcing inputs on shipping delays tied to higher fuel and transport costs.

The root cause traces back to the disruption of maritime traffic through the Strait of Hormuz, where the conflict between the United States and Iran has reshaped global logistics since early 2026. Closure and instability in this strategic chokepoint have forced rerouting of cargo, lengthened delivery times, and inflated the price of energy-intensive materials. UK suppliers reported delivery times lengthening for the third consecutive month in May, while overall purchasing costs climbed at the fastest rate since June 2022.

Construction is a major consumer of chemicals and chemical-derived products. The sector drives demand for plastic pipe, insulation, paints and coatings, adhesives, resins, and synthetic fibers. As construction output contracts, the slowdown ripples back through the chemical supply chain, weakening demand for these derivative products at the same time their production costs are climbing because of higher energy and feedstock prices.

Fuel surcharges and rapid price increases for energy-intensive raw materials have been felt throughout the construction supply chain, according to S&P Global. Input price inflation eased only marginally from April's near four-year high, and vendor performance in the eurozone deteriorated to the worst level since December 2022. Business confidence has also collapsed, with optimism in the UK sector now nearly as low as the levels seen ahead of last autumn's budget.

The situation has worsened progressively since the conflict began. What started as isolated shipping delays in late winter has hardened into a structural cost problem by late spring, with each monthly PMI release confirming deeper contraction and persistent input cost pressure. Analysts warn that if the Middle East conflict remains unresolved, the energy shock will continue to weigh on activity, with the risk of a prolonged downturn in construction order books across both the UK and the eurozone.

For now, the sector remains caught between weak demand and rising costs, a combination that leaves little room for recovery while the conflict and its disruption of global supply routes persist.