What the forecasters found

The ECB's Q2 Survey of Professional Forecasters, published on 4 May, recorded a sharp upward revision in the inflation outlook, according to the central bank's release. The 56 respondents, described by the ECB as "experts affiliated with financial and non-financial institutions based in Europe", now project harmonised consumer price inflation of 2.7 per cent for 2026, up from 1.8 per cent in the Q1 survey.

At the same time, growth expectations were trimmed to 1.0 per cent for 2026, down from 1.2 per cent, as reported by City AM. The combination of rising prices and weakening output is the textbook definition of stagflation, a condition that leaves central banks with no comfortable policy option.

The survey did offer a sliver of medium-term reassurance. Respondents expect inflation to ease to 2.1 per cent in 2027 before settling at the ECB's 2 per cent target by 2028, according to the ECB's published data. That optimism, however, rests on a critical assumption: that the energy shock driving the revision proves temporary.

Why a June rate hike is back on the table

The ECB's Governing Council, chaired by President Christine Lagarde, held the main financing operations rate steady at 2.15 per cent at its April meeting, according to the central bank's post-meeting statement. That decision was widely expected. What was less expected was the hawkish tone that accompanied it.

At the press conference following the April rate decision, Lagarde acknowledged "intensified" risks of both slower growth and rising inflation, as reported by City AM.

"The longer the war continues and the longer energy prices remain high, the stronger is the likely impact on broader inflation and the economy," she warned.

Markets have since begun pricing a meaningful probability of a rate increase at the June Governing Council meeting. A hike would be the first since the post-pandemic tightening cycle ended. For the ECB, the dilemma is acute: raising rates into slowing growth risks deepening the downturn, but holding steady while inflation expectations drift higher risks entrenching price pressures.

The survey fieldwork was conducted between 31 March and 8 April, according to the ECB, meaning the results do not capture the most recent escalation in Gulf tensions. If anything, the current inflation outlook may be more severe than the headline figure suggests.

The Iran variable: energy costs and duration risk

The catalyst behind the inflation revision is energy. Oil prices have been climbing toward multi-year highs amid escalating tensions between Iran and the United States over the Strait of Hormuz, through which roughly 20 per cent of global crude shipments pass, as reported by City AM.

Iran's threat to target US vessels enforcing what President Donald Trump has called "Operation Freedom" sent fresh ripples through commodity markets in early May. Brent crude prices headed back toward multi-year peaks on Monday, City AM reported, compounding an already stretched energy cost base for European industry.

The duration of the conflict is the key unknown. The survey's medium-term inflation projections assume the shock fades. If it does not, and Brent remains elevated through the second half of 2026, the pass-through into transport, manufacturing, and wholesale energy contracts across Europe will be substantial. For UK businesses sourcing inputs from eurozone suppliers, that translates directly into higher procurement costs, denominated in a currency that may also be subject to tighter monetary policy.

What UK operators should be planning for

The eurozone is the UK's largest trading partner, accounting for roughly 42 per cent of UK goods exports, according to government trade data. A stagflationary environment on the continent creates a dual problem for UK firms with cross-Channel operations: input costs rise while customer demand softens.

Pricing power under pressure

UK exporters selling into a slowing eurozone face reduced pricing power. Raising sterling-denominated prices to offset higher domestic costs becomes harder when continental buyers are themselves squeezed. Firms with fixed-price contracts running into the second half of 2026 may find margins eroding faster than anticipated.

Hedging and trade finance

A June ECB rate hike would raise the cost of euro-denominated borrowing. UK operators drawing on euro trade finance facilities, revolving credit lines, or cross-border working capital arrangements should be reviewing terms now. Locking in fixed-rate euro facilities before a potential hike could preserve cash-flow predictability, though the window may be narrow.

Sterling-euro hedging decisions are equally pressing. If the ECB tightens while the Bank of England holds, the interest rate differential narrows, with implications for forward rates and the cost of hedging programmes.

Supply chain contingency

Energy-intensive eurozone suppliers, particularly in chemicals, glass, metals, and food processing, are most exposed to the oil price shock. UK procurement teams should be stress-testing supplier viability and identifying alternative sources where lead times permit. The lesson from the 2022 energy crisis is that supply chain disruption often arrives faster than headline data suggests.

None of this is cause for panic, but it does demand attention. The ECB's survey is one data point among many, and the medium-term projections still anticipate a return to target. The risk, as Lagarde herself acknowledged, is that the underlying assumptions prove too optimistic. UK operators with meaningful eurozone exposure would be prudent to plan for that possibility rather than rely on it passing quickly.