Oil markets spent most of Thursday treating Gulf tensions as a disturbance rather than a shock. That changed on Friday after public comments from Qatar’s energy minister, Saad al‑Kaabi, indicating that Gulf exporters could halt shipments within days and warning of prices heading towards $150 a barrel. Benchmark crude has risen about 27% since the conflict began, and prices of key refined and petrochemical products, including jet fuel and urea, have followed.
While Iran has not formally closed the Strait of Hormuz, shipowners and crews have restricted transits as war‑risk premiums escalate and safety concerns mount. The effect is a de facto choke on one of the world’s most important energy routes, tightening physical supply and intensifying moves along the futures curve.
The immediate macroeconomic consequence is a fresh inflation impulse radiating from the Gulf. Energy, transport fuels and fertiliser feedstocks are rising together, with potential second‑round effects across food production and industrial chemicals. Credit markets are adjusting to the repricing of risk.
These moves landed days after the Spring Statement, creating an immediate mismatch with the Office for Budget Responsibility’s forecast assumptions. On Tuesday, the OBR baseline assumed crude at around $63 a barrel; by Friday’s close prices were near $94. UK wholesale gas was assumed at 74p per therm; the market traded around £1.35, having touched £1.70 earlier in the week. The 10‑year gilt yield was assumed at 4.4% but ended the week near 4.6% after approaching 4.7% intraday.
Gilts underperformed many peers, reflecting investors’ memory of the UK’s exposure to energy‑price inflation during the Russia–Ukraine shock. A higher risk‑free curve feeds directly into the debt‑interest line and, if sustained, tightens fiscal headroom.
Rates markets have pared back expectations of near‑term Bank of England cuts. A reduction that had been heavily priced for this month is now viewed as less likely, with policymakers expected to wait for clearer inflation and energy data. The signal is to wait for evidence rather than move pre‑emptively.
Retail finance is already reacting. Lenders have begun repricing fixed‑rate mortgages after several weeks of gradual reductions, and any prospect of a short‑term price war appears to have receded. For households, the direction of travel has shifted from relief to caution.
The policy narrative had briefly improved as markets credited the Government with a quicker planned fall in borrowing. That has been overshadowed by renewed energy‑price risk and the associated move in gilt yields. For the Treasury, both the growth outlook and the cost of funding are drifting in the wrong direction at the same time.
Regional security developments extend beyond shipping lanes. Incidents reported around Bahrain’s oil facilities, Qatar’s gas processing sites, ports near the Dubai Palm and tankers off Kuwait have increased the perceived risk to critical infrastructure. The economic effects are therefore not incidental to the conflict but part of its conduct.
Markets are not yet pricing a full‑blown energy shock, but they are starting to assume tougher scenarios. On present momentum, a break above $100 a barrel next week would not require much additional disruption. For UK policy and finance teams, the watchpoints are Hormuz shipping constraints, the Brent and UK gas forward curves, and Bank of England communications.
The OBR’s figures are a snapshot taken before publication; if current prices persist, the forecast profile for inflation, borrowing costs and receipts will diverge from the one published on Tuesday. That calls for close monitoring ahead of the next fiscal update.
Outcomes remain uncertain, including on duration. Public statements from US President Donald Trump have pointed to a timeline of weeks or months, while Gulf producers have signalled potential curbs. In this environment, organisations should plan for volatility in energy and funding costs over the near term.