UK Factory Prices Surge to Fastest Pace Since June 2022 as Iran War Strains Supply Chains
British manufacturers raised their prices at the fastest rate since June 2022 last month in response to a big increase in costs as the Iran war disrupts supply chains, according to a survey likely to concern the Bank of England. The data, published on Monday by S&P Global, showed that the headline manufacturing Purchasing Managers’ Index rose to its highest level in four years in May, but analysts warned the apparent strength masks a deeper fragility. yahoo
The PMI Numbers
The seasonally adjusted S&P Global UK Manufacturing PMI rose to a four-year high of 53.9 in May, up slightly from 53.7 in April, according to S&P Global. Any reading above 50 signals expansion. The May figure was also revised up from an initial flash reading of 53.7, according to Reuters. Chronicle.lu
The breadth of improvement was notable. All data points relating to output, employment and purchasing simultaneously improved for the first time since May 2022. Business optimism among manufacturers reached a three-month high, with almost half of survey respondents forecasting output growth over the coming year, according to Investing.com. yahoo
But S&P Global was quick to flag that the headline numbers do not tell the full story.
Front-Loading, Not Genuine Demand
S&P Global said the output balance of the PMI for Britain rose in May to its highest since the start of the conflict at the end of February, but this appeared to reflect a front-loading of orders to get ahead of expected further price rises and supply-chain problems. yahoo
Rob Dobson, director at S&P Global Market Intelligence, said: “The recent upturn in new order intakes that is driving the expansion in output is heavily reliant on both manufacturers and their clients front-loading purchases to mitigate expected war-related price increases and supply chain disruption. This bounce will fade once customers have built up sufficient safety stocks.” yahoo
The pattern is familiar. Front-loading due to a prolonged Iran war may mirror a similar pattern last year when companies bought stocks early to get ahead of President Donald Trump’s tariffs. In both cases, the surge in orders reflected precautionary buying rather than an underlying strengthening of demand. yahoo
Prices and Costs
The inflation data within the survey is the element most likely to draw attention from the Bank of England. The manufacturing PMI showed firms’ input costs rose last month at their fastest pace since June 2022, driven by higher prices for chemicals, electronics, energy, foodstuffs, fuels, plastics, metals, packaging, paper and timber. yahoo
The list of factors driving those costs up runs long. “The war in the Middle East, commodity market movements, geopolitical strife, supply chain issues, material shortages, tariffs, rising labour costs and higher taxes were all mentioned by panel members,” S&P Global said. yahoo
Manufacturers are not absorbing those costs. While the Bank of England hopes that firms will absorb increased costs, the PMI survey shows manufacturers passing them on to customers at one of the fastest rates in the survey’s history. The output price index has only been higher on a sustained basis between May 2021 and June 2022, when post-Covid disruption and Russia’s full-scale invasion of Ukraine helped drive a prolonged period of elevated inflation. yahoo
S&P Global noted these price and supply factors are having a direct impact on manufacturers, with cost inflation rising to a near four-year high and pressure on supply chains leading to material shortages and longer lead times. “This will continue to constrain manufacturers and put growth at risk for as long as geopolitical uncertainty, war in the Middle East and risks to key transport routes such as the Strait of Hormuz continue to pose a threat,” S&P Global said. Wikipedia
The Bank of England’s Dilemma
The data lands at a sensitive moment for the Bank of England. UK CPI inflation stood at 2.8% in April, down from 3.3% in March, according to parliamentary research published on May 27. Policymakers had hoped that easing price pressures would allow for further interest rate cuts. The May PMI complicates that picture by showing manufacturers actively pushing price increases through to customers — a dynamic that could keep services inflation elevated if wage demands follow.
Martin Beck, chief economist at WPI Strategy, said: “If May’s resilience in the PMI is sustained, it could be another sign, alongside stronger-than-expected growth in the first quarter and lower-than-expected inflation in April, that the economy may prove less exposed to overseas headwinds than some fear.” yahoo
That reading is more optimistic than S&P Global’s own assessment, and the two views capture the central tension the Bank of England now faces: genuine short-term resilience driven by precautionary stockpiling, set against an inflation impulse that shows no sign of fading quickly.
Background
The Iran war, which began at the end of February 2026 according to S&P Global’s timeline, has disrupted shipping routes and commodity markets in ways that have fed directly into UK factory costs. Manufacturing accounts for 8.5% of total UK economic output, according to Office for National Statistics data compiled by parliament as of the first quarter of 2026. The S&P Global UK Manufacturing PMI has shown growth — readings above 50 — for seven consecutive months. Input price inflation in UK manufacturing has been climbing since late 2025 as Middle East conflict risks mounted, with the April 2026 composite PMI already showing the fastest rise in cost burdens across the private sector economy for nearly three and a half years.
What Happens Next
The Bank of England’s next Monetary Policy Committee decision is expected in June, and the May PMI data will feed directly into its assessment of whether domestic price pressures are re-accelerating. S&P Global will conduct further monthly surveys tracking whether the front-loaded order books that inflated May’s headline reading begin to unwind in June, as Rob Dobson projected. The Strait of Hormuz remains a focal point: S&P Global identified continued risk to that key shipping route as the primary variable that will determine how long supply chain constraints and input cost pressures persist. Any ceasefire development in the Iran conflict would be the single largest factor capable of reversing the cost trend the May PMI documents.
