The S&P Global UK Construction PMI came in at 45.6 for March 2026 – below the 50.0 growth threshold for the 15th month in a row. Residential building is in freefall (index: 38.2). New orders fell at the fastest pace since November 2025. And cost inflation just recorded its sharpest month-on-month acceleration in nearly 30 years, driven by the war in the Middle East pushing up fuel, transport, and raw material prices. If you’re running projects or managing pipelines in the UK right now, this data matters.
Fifteen months. That’s how long UK construction has been sitting below the growth line on the PMI index – the monthly health check that surveys hundreds of firms across residential, commercial, and civil engineering work. March 2026 came in at 45.6, up slightly from February’s 44.5, which sounds like progress until you remember that anything below 50.0 still means contraction. The trend hasn’t broken. If anything, the picture got sharper.
The headline number is bad enough. What sits underneath it is worse. Residential construction dropped to a sub-index of 38.2 – deep in contraction territory, and comfortably the weakest performing segment in the market. New orders fell at their fastest rate in four months. And input cost inflation accelerated at a pace the survey hasn’t recorded in nearly 30 years of data collection. The conflict in the Middle East, specifically the disruption to shipping through the Strait of Hormuz, is running straight through UK supply chains in ways that are now showing up clearly in the numbers.
This isn’t a one-month blip. The UK construction sector has been grinding through a prolonged, multi-front contraction – weak demand, fragile client confidence, rising costs, and a housing market that’s still not finding its footing. March just confirmed the pattern is holding. The question for anyone with skin in the game isn’t whether things are tough. It’s where the pockets of resilience actually are, and what the data tells us about timing a recovery.
What the March PMI actually tells us
Reading between the index numbers
The PMI – or Purchasing Managers’ Index – works by surveying construction firms each month and asking whether key conditions (output, new orders, employment, supplier delivery times, input costs) are better, the same, or worse than the previous month. A score above 50.0 signals expansion. Below 50.0 signals contraction. The further from 50.0 in either direction, the stronger the signal.
March’s headline figure of 45.6, published by S&P Global Market Intelligence on 8 April 2026, marks the 15th straight month in contraction. The sector hasn’t been in growth since December 2024. The marginal uptick from February’s 44.5 is real but modest – partly attributable to a return to normal weather after unusually wet conditions delayed site activity last month, rather than any genuine demand recovery. That’s a meaningful distinction. Weather-driven improvement doesn’t signal momentum; it signals a bounce from a particularly bad baseline.
Tim Moore, Economics Director at S&P Global Market Intelligence, put it plainly: new orders dropped at one of the sharpest rates seen over the past six years. That’s not a softening – that’s a pipeline problem. Firms aren’t just delivering less work; they’re winning less of it. Client risk aversion, delayed investment decisions, and the spillover effects of geopolitical instability are all feeding into a demand picture that’s deteriorating faster than output.
“March data suggested a challenging near-term outlook for construction activity as total new orders decreased at one of the sharpest rates seen over the past six years.”Tim Moore, Economics Director, S&P Global Market Intelligence
The sector breakdown: where it’s worst, where it’s holding
Residential is leading the contraction
House building came in at 38.2 in March – well into contraction, and the weakest of the three sub-sectors. The residential market has been the consistent drag on the headline figure for months, reflecting a combination of high borrowing costs, suppressed buyer demand, and developers who are still reluctant to commit to new starts without firmer sales evidence. The government’s housebuilding targets are running into the hard reality of a private sector that won’t build speculatively into weak demand at thin margins.
Commercial construction fared better at 47.1, while civil engineering came in at 44.8. Both sub-sectors recorded slower rates of contraction than in February. Civil engineering, in particular, saw its least-marked decline since May 2025, with some firms pointing to a gradual turnaround in major infrastructure work, especially in the energy sector. Offshore wind, grid upgrades, and data center construction are generating real demand – not enough to offset the residential collapse, but enough to keep a floor under parts of the market.
The split between sectors matters for where firms are positioning themselves right now. KPMG’s 2025/26 Global Construction Survey, which we covered recently, flagged the energy transition and regulated utilities pipeline as durable demand sources for UK contractors. March’s PMI data backs that read. The problem is that not everyone can pivot to infrastructure work mid-cycle – it requires different capabilities, different supply chains, and different client relationships than residential or commercial fit-out.
- House building: 38.2. The weakest sub-category by a significant margin. Consistent sharp contraction as developers hold back on new starts.
- Civil engineering: 44.8. Least-marked decline since May 2025, with early signs of recovery in major infrastructure and energy sector work.
- Commercial construction: 47.1. Closest to neutral, but still contracting. Smaller declines than in February as some project activity continued.
The cost shock nobody needed right now
Nearly 30 years of data – and this is the sharpest acceleration
The demand picture is one thing. The cost environment is another entirely. March recorded the fastest month-on-month acceleration in input cost inflation in nearly 30 years of S&P Global PMI data collection. That’s not a statistic to skim past. Nearly three decades of survey data, through multiple recessions, commodity crises, and a global pandemic, and March 2026 produced a cost shock bigger than any of them on a rate-of-change basis.
The driver is the conflict in the Middle East and the disruption it’s causing to global shipping. The Strait of Hormuz closure has pushed up fuel, transportation, and raw material prices rapidly. Forty-eight percent of firms surveyed reported rising input costs in March. Fuel surcharges and transport costs were widely cited. Supply chain delivery times deteriorated for the first time since last summer as international shipping delays fed through to UK sites. For firms already operating on margins of 2-3%, absorbing a cost shock of this speed and scale is genuinely dangerous.
This connects directly to what our analysis of the FMB/CIOB State of Trade Survey found heading into 2026: 75% of UK construction SMEs were already reporting material cost increases in H2 2025, before this latest spike. Those firms now face a compounding problem – a cost environment that was already challenging, hit by a new external shock with no clear resolution timeline.
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Budget optimism wiped out in a single month
Business optimism in March fell to a three-month low – erasing all the improvement that had built steadily since the Autumn Budget. That steady recovery in confidence had been one of the more encouraging signals coming into 2026. Firms were starting to believe the post-Budget environment would unlock delayed decisions and bring projects forward. March closed that chapter quickly.
The drivers are layered. Clients are citing fragile consumer confidence, the direct shock of the Middle East conflict, higher borrowing costs, and gloomy domestic economic prospects. These aren’t obscure macro concerns – they translate directly into deferred project starts, extended pre-construction phases, and procurement decisions getting kicked further down the road. For contractors dependent on winning new work to maintain utilization, each deferred decision is a pipeline problem compounding.
Employment declined at a faster rate in March too, with firms cutting subcontractor usage and purchasing activity in response to lower workloads. That’s a leading indicator worth watching carefully. When firms reduce headcount and subcontractor engagement, they’re making calls about the near-term order book. Right now, enough firms are making that call in the same direction to show up in the aggregate data.
UK Construction PMI: how March 2026 stacks up
Putting the latest reading in context
The table below places March 2026’s PMI reading alongside recent months and key sub-sector figures, to give a clearer sense of the trajectory rather than treating any single month in isolation.
| Period | Headline PMI | House Building | Civil Engineering | Commercial | New Orders trend |
|---|---|---|---|---|---|
| December 2024 | 40.1 | 33.5 | 32.9 | 42.0 | Sharp decline |
| January 2026 | 46.4 | Contracting | Contracting | Slowest decline since May 2025 | Slowest fall in 3 months |
| February 2026 | 44.5 | Fastest pace | Sharp decline | Sharp decline | Lower new orders, low demand |
| March 2026 | 45.6 | 38.2 | 44.8 | 47.1 | Fastest drop since Nov 2025 |
Source: S&P Global UK Construction PMI, March 2026. Sub-sector figures for December 2024 and January/February 2026 are sourced from Trading Economics historical PMI data.
Frequently asked questions
A PMI reading below 50.0 signals that conditions across the surveyed firms got worse compared to the previous month – in terms of output, new orders, employment, and/or costs. At 45.6, the March 2026 reading is a solid contraction signal, not a borderline one. For firms on the ground, it translates to fewer new contract wins, tighter pipelines, more clients delaying decisions, and rising input costs squeezing margins on existing work. The 15-month streak below 50.0 means this isn’t a short-term dip – it’s a sustained period of deteriorating conditions that firms have had to adapt their operations around. (Source: S&P Global)
The house building sub-index sat at 38.2 in March – the weakest of the three categories by a wide margin. Residential is being hit from multiple directions simultaneously: high borrowing costs are suppressing buyer demand, developers are holding back on new starts without firm sales evidence, and planning delays continue to slow projects that do get approved. The government’s ambitious housing targets are running into private-sector economics that don’t currently support speculative development at scale. Civil engineering and commercial work have some government and institutional backing (infrastructure programs, energy projects, commercial fit-out activity) that residential simply doesn’t have at this moment. (Source: PBC Today)
The conflict and the disruption to shipping through the Strait of Hormuz are pushing up fuel prices, transport costs, and raw material prices for UK construction firms. Forty-eight percent of respondents in the March PMI survey reported rising input costs. Supply chain delivery times also deteriorated for the first time since last summer as international shipping delays compounded the direct price increases. The month-on-month acceleration in cost inflation from February to March was the largest recorded in nearly 30 years of S&P Global PMI data collection – a figure that requires some sitting with, given how many economic shocks that data series has captured in that time. (Source: S&P Global)
Selectively, yes. The energy sector is the most consistent bright spot in the March data, with some firms reporting a turnaround in major infrastructure work tied to energy projects. Civil engineering (44.8) and commercial construction (47.1) are both still contracting but showing slower rates of decline than in February. Data center construction is also generating real demand, and the broader regulated utilities pipeline – water infrastructure, grid upgrades, offshore wind supply chain – represents durable longer-term work. The challenge is that not every firm can access these sectors quickly. They require different capabilities, relationships, and supply chains than the residential and commercial work many UK contractors are built around. (Source: Bricks & Bytes – KPMG Global Construction Survey)
The PMI data lands on top of an already difficult backdrop for smaller firms. The FMB/CIOB State of Trade Survey for H2 2025, which we covered in detail, found that 72% of UK construction SMEs were already being hit by skilled labor shortages, 75% were reporting material cost increases, and half were logging lower-than-expected profits. The Begbies Traynor Red Flag Alert found that the number of construction firms in ‘critical’ financial distress had risen by 46.1% year-on-year. The PMI data captures the aggregate direction of conditions – and those underlying conditions were already stretched before the March cost shock added another layer of pressure. (Source: Bricks & Bytes – FMB/CIOB State of Trade Survey)
Three things, based on what the March data highlights. First, the trajectory of new orders – the fastest decline in four months is a warning sign, and April’s reading will tell us whether March was an outlier or the start of a fresh leg down. Second, input cost inflation – if the Middle East situation stabilises or shipping routes recover, some of that cost pressure should ease; if it persists, margins are going to get squeezed further on live contracts. Third, the employment picture – firms cutting subcontractor usage and headcount are making near-term calls on their order books, and a sustained decline in employment across the sector would start to create capacity problems when demand eventually turns. Recovery will be faster for firms that hold capability through the downturn. (Source: PBC Today)
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S&P Global UK Construction PMI – March 2026 Press Release
PBC Today – Construction downturn continues, according to latest data (April 2026)
Bricks & Bytes – Nearly 3 in 4 UK Construction Firms Are Now Affected by Skills Shortages
Bricks & Bytes – KPMG’s 2025/26 Global Construction Survey
Trading Economics – UK Construction PMI historical data
