The Iran conflict is reshaping global markets, placing unprecedented pressure on the already fragile UK construction sector.
A leading voice in construction mergers and acquisitions has issued a clear warning: the evolving geopolitical landscape is no longer a distant concern but a direct operational threat to UK contractors, developers and investors. Bradley Lay, co-founder of Peak Capital Group, argues that the Iran war impact on UK construction could mark a defining moment for the industry’s financial resilience.
The UK construction sector has faced sustained disruption over recent years, from Brexit-related supply chain friction to pandemic-driven delays and evolving compliance requirements under the Building Safety Regulator. According to Bradley Lay, the assumption that 2026 would bring stability has been overturned.
He said: “The UK construction sector has already been through a sustained period of pressure following Brexit, Covid and regulatory disruption through the Building Safety Regulator process. Many business owners felt that 2026 would finally bring some stability. Unfortunately, the reality is quite the opposite. The Iran conflict is introducing another layer of volatility that could push already stretched businesses beyond breaking point.”
The core issue lies in energy market volatility. The International Energy Agency reported on March 12 that the conflict has triggered the largest supply disruption in the history of the global oil market. This has immediate consequences for construction cost inflation in the UK.
Bradley added: “This is not a contained issue, it feeds directly into energy prices, material costs, programme delays and ultimately whether projects remain commercially viable.”
Energy inflation and construction material price increases
Energy-intensive industries sit at the centre of construction supply chains. Rising oil and gas prices are now affecting multiple stages of project delivery, amplifying cost pressures across the lifecycle.
Bradley explained: “The construction sector is uniquely exposed to energy inflation because it gets hit multiple times. You have factory energy for producing materials, fuel for transporting those materials and then energy consumption on site. When all three increase simultaneously, the financial impact is severe and immediate.”
This dynamic is driving construction material price increases across key categories, including bricks, cement, insulation, asphalt and glass. For contractors operating on fixed-price contracts, these increases present a direct threat to already constrained margins.
Supply chain disruption and project delays in UK construction
Global supply chain disruption linked to the Iran conflict is expected to extend lead times across critical packages. Materials such as steel, aluminium systems, façade components and mechanical and electrical equipment remain heavily reliant on international sourcing.
The result is a heightened risk of project delays in UK construction, contractual disputes and cost overruns.
“The Office for National Statistics has already reported that UK construction output fell for the fourth consecutive three-month period leading into 2026, even before the full impact of this conflict is felt,” Bradley noted, referencing data from the Office for National Statistics.
“What we are now facing is a compounding effect, where existing delays are intensified by new supply chain shocks. This is how projects move from being challenging to unviable.”
Labour shortages and productivity challenges in construction
Alongside material and energy pressures, labour availability continues to constrain delivery capacity. The Construction Industry Training Board has highlighted the need for significant workforce expansion, yet project timelines are lengthening rather than stabilising.
Bradley said: “When projects are delayed and programmes stretch, productivity drops and costs rise indirectly. Businesses often underestimate how damaging this can be to cash flow.”
This creates a structural challenge: even without immediate wage inflation, declining productivity and increased reliance on overtime and subcontractor premiums are eroding profitability.
Investor confidence and construction market uncertainty
The Iran conflict is also influencing construction market uncertainty in the UK through its impact on inflation and interest rates. Higher energy costs contribute to broader economic instability, affecting lending conditions and development viability.
Bradley explained: “Public infrastructure projects are likely to remain more resilient because they are government-backed and long-term in nature, however, private housing and commercial developments are far more sensitive to shifts in confidence and borrowing costs. That is where we are likely to see hesitation, delays or cancellations.”
This divergence between public and private sector resilience is likely to shape deal flow, pipeline stability and valuation trends across the construction industry.
Strategic risk management for construction businesses in 2026
Despite the scale of disruption, Bradley Lay emphasises that construction business owners retain agency. Strategic risk management in construction is now essential rather than optional.
“This is not a time for complacency or short-term thinking,” he said. “Business owners need to be planning now, not reacting later.”
Key priorities include securing material supply early, strengthening supplier relationships and prioritising financial stability when selecting subcontractors.
He added: “Where possible, businesses should be securing materials early and ensuring supply chain certainty. If direct procurement is not feasible, they should be working closely with main contractors and employers to protect their position.”
“Crucially, cost-based decision-making must evolve.
“The contractors who protect their margins in 2026 will not be the cheapest, they will be the most prepared.”
The Iran conflict exposes structural weaknesses in UK construction, demanding decisive leadership, disciplined risk management, and operational resilience to safeguard margins, maintain viability, and navigate sustained market uncertainty.
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