The news, when it broke this morning from Thames House, was predictably grim. UK intelligence has confirmed that the recent spate of shipping attacks in the Gulf of Oman bears the unmistakable fingerprints of Tehran. For those of us who watch the markets, this is not a mere geopolitical squabble. It is a direct assault on the arteries of global commerce, and the reaction in the trading pits has been sharp and immediate.
Oil futures spiked more than three dollars a barrel as the report landed, a reflex that tells you everything you need to know about the market's view of the Strait of Hormuz. That narrow channel, through which a fifth of the world's crude passes, is now a chokepoint with a target on its back. The Iranian playbook is well known: deny, delay, and use proxies to raise the cost of doing business in their backyard. This time, the evidence appears to be solid enough for Whitehall to act.
The Royal Navy's deployment of Type 45 destroyers and minehunters to the region is a signal, and signals cost money. The Treasury will be watching the bill for this operation, which will run into tens of millions of pounds. But the cost of inaction would be far higher. Insurance premiums for vessels transiting the Gulf have already shot up by 40 percent since the first attacks in June. If this continues, we will see a rerouting of shipping around the Cape of Good Hope, adding days and dollars to every voyage. That cost, ultimately, is borne by the consumer in the form of higher fuel prices and imported goods.
Let us be clear: this is not a repeat of the Tanker War of the 1980s. The financial stakes are far greater. The global supply chain is already stretched thin by post-pandemic demand and labour shortages. A sustained disruption in the Gulf would send shockwaves through the bond markets, with gilt yields likely to rise as investors price in higher inflation. The Bank of England, already wrestling with a stubbornly high core CPI, would be forced to keep rates higher for longer. That is a bitter pill for a government that has promised to halve inflation.
There is also the matter of capital flight. Investors loathe uncertainty, and the Persian Gulf is not the only hotspot right now. With tensions simmering in Ukraine and the South China Sea, the risk premium on emerging markets is soaring. The dollar is strengthening, and that spells trouble for the pound. Sterling has already fallen two cents against the greenback since the intelligence was released. A weaker pound makes our imports more expensive, adding to the inflationary pressure. It is a vicious circle.
The government's response will be scrutinised not just in Whitehall but in the City. Fiscal discipline is the watchword. Any talk of a new 'war premium' on spending must be met with scepticism. The Treasury cannot afford to throw money at this problem. Instead, it must rely on the Royal Navy and the insurance markets to do their jobs. The alternative is a prolonged period of economic stress that would make the cost of living crisis look like a mild squall.
In the meantime, the market will be watching the next few days closely. Any escalation, any confirmed damage to a tanker, will trigger another spike in oil and a flight to safe havens. The Bank of England may be forced to issue a statement to calm the gilt market. This is the new reality. The world is a dangerous place, and the price of security, whether in the Gulf or on the high street, is going up.
