The fragile calm in the Middle East has been shattered. Overnight, reports confirmed tit-for-tat military strikes between Iran and the United States, with each side accusing the other of violating the terms of the recent ceasefire agreement. The news hit London markets like a shock to the system.
Brent crude spiked over 5% to $89 a barrel, the highest level since October, as traders priced in the very real risk of a broader regional conflict that could choke the Strait of Hormuz. The 10-year gilt yield jumped 12 basis points to 4.23%, reflecting a classic flight to safety.
Sterling, however, took a hit, sliding half a cent against the dollar to $1.2620. The market's message is clear: investors are demanding a higher risk premium for holding UK assets in a world where geopolitical stability is no longer a given.
This is a crisis that the Treasury will watch with deep unease. The fiscal arithmetic was already tight. A sustained oil price spike of this magnitude would add billions to the UK's fuel subsidy bill, while simultaneously squeezing consumer spending and corporate margins.
The Bank of England, already wrestling with stubborn inflation, now faces a fresh headache. A weaker pound and higher energy costs will feed directly into import prices, complicating the path to the 2% target. Some traders are already whispering about a potential emergency rate rise, though that seems premature.
There is talk of capital flight from emerging markets, but London is hardly a safe haven now. The gilt market is pricing in higher risk. If this escalates, the cost of UK government borrowing could rise sharply.
The budget headroom that the Chancellor was counting on is evaporating before our eyes. For investors, this is a wake-up call. The era of easy money and geopolitical calm is over.
The market is repricing risk, and it is painful. The only question is how much further it has to go. Alastair Thorne, Financial Editor.
