The UK economy shrank by 0.1% in April, the first contraction since the strong Q1 run, as the Iran war's energy shock began propagating through the real economy. The Office for National Statistics confirmed what forecasters had expected: the closure of the Strait of Hormuz — the world's most consequential oil transit point — has ended the UK's growth streak. March's 0.3% expansion is now a receding memory. The damage landed squarely on services, which fell 0.2%. Administration, arts, entertainment and recreation led the decline — sectors where discretionary spending dries up first when energy bills climb. Construction managed a 0.1% rise, but the ONS noted this came "solely from an increase in repair and maintenance," with new work falling 0.3%. Labour's 1.5m homes pledge is running into a wall of cost pressure before it gets off the ground. Chancellor Rachel Reeves framed the story as exogenous shock hitting an economy she had strengthened. "Before the conflict in the Middle East, growth was higher than expected and inflation was falling," she said, pointing blame at Donald Trump's "folly" in unleashing the conflict. The political positioning is clear: this is not our war, but we are better prepared than we would have been. Whether that framing holds depends entirely on what Q2 and Q3 look like. The three-month rolling figure — 0.7% GDP growth through April — still looks respectable, but it is a lagging indicator masking the turn. Fergus Jimenez-England of the National Institute of Economic and Social Research delivered the sharper forecast: the slowdown will "intensify as higher energy costs feed through the economy," with the worst impact arriving in Q3 when the energy price cap rises. This is the predictable mechanics of energy-shock transmission, not speculation. The Bank of England faces a rate decision next Thursday with inflation data and jobs numbers arriving first. The classic stagflation bind is forming: energy-driven inflation argues for holding or raising rates, while contracting output argues for easing. There is no clean answer when the shock is supply-side and external. The World Bank has already downgraded global growth to its lowest pace since the pandemic. The UK is not uniquely exposed, but its services-heavy economy and energy import dependency mean the Hormuz closure hits with particular force. Every percentage point of oil price increase flows through to consumer prices, business costs, and government borrowing within quarters. What matters now is velocity. April was one month. If May and June follow the same pattern, Q2 will be negative and recession talk will dominate the autumn. The structural question is whether the UK's energy transition and fiscal buffers are sufficient to absorb a prolonged conflict — or whether this is 1973 running on a faster clock.
