The Bank of England is expected to raise the base rate from 3.75% to 4% on 5 November, its first hike since the Iran war reshuffled global energy markets. Financial markets are pricing in four quarter-point increases over the next twelve months, which would push the base rate to 4.75% by mid-2027. The trigger is inflation running at 3.5% — nearly double the Bank's 2% target — driven primarily by oil prices that spiked after the closure of the Strait of Hormuz. The timing is brutal for households. Some 700,000 borrowers were forecast to roll off fixed-rate deals between July and December 2026. A further 2.3 million will hit the end of their fixed terms in 2027, according to UK Finance. These borrowers locked in during a lower-rate environment and will now re-price into a market where swap rates — the wholesale rates that underpin fixed mortgages — have already climbed on bond-market volatility. Mortgage approvals fell to a near three-year low in September as buyers pulled back. The Office for Budget Responsibility paints the macro picture in a single number: household disposable incomes will fall 0.6% next year after inflation, a sharp reversal from the 0.6% growth it forecast in March. The OBR's David Miles called it "a pretty grim picture." The energy price cap is expected to rise by more than £400 in January, compounding the squeeze on the same households about to absorb higher mortgage payments. Chancellor John Healey responded with a £100 payout to 20 million households, cancellation of planned fuel duty rises, and a VAT cut extension on electricity bills. The package was funded by tax rises on banks, savers, and landlords — a redistribution that alleviates immediate pain but does nothing to address the structural exposure of an economy where millions of households sit on time-delayed rate risk with no hedging mechanism. The Bank of England's wait-and-see posture looks increasingly costly. The Fed, ECB, and Bank of Japan all raised rates earlier in the energy crisis. Governor Andrew Bailey held off, watching for second-round effects in wage growth. That caution means the Bank now faces a worse trade-off: inflation is higher than it would have been with earlier action, and any rate increases land on an economy already absorbing an energy price shock. The UK was the joint fastest-growing G7 economy in the first half of 2026 — partly driven by AI-related sectors — but growth forecasts for 2027 have been cut sharply. City economists are split. Money markets price four hikes by July; many analysts think two is more likely. The gap between those two scenarios — a base rate of 4.5% versus 4.75% — matters less than the direction: up. For the 2.3 million households rolling off fixed deals next year, the question isn't whether their payments rise, but by how much. The deeper structural problem is that UK housing finance concentrates rate risk onto individual households through short-duration fixed-rate products. In the US, 30-year fixed mortgages transfer that risk to lenders and the secondary market. In the UK, the typical fix is two to five years, after which the borrower is fully exposed. Every rate cycle, the same trap springs — and this one was loaded by a geopolitical shock no household could hedge against.
