The Bank of England rate hike landed on Thursday, and it is the first one in more than three years: the UK's central bank lifted its main rate to four per cent from three point seven five per cent as the Iran war keeps pushing energy prices up.

If you have a mortgage, a student loan or a savings account in Britain, this one matters. Here is what the Monetary Policy Committee did, why it did it, and what could come next.

What the Bank of England rate hike actually changed

The nine-member committee voted eight to one for a quarter-point rise, according to the Bank of England's own Monetary Policy Report. One member, Catherine Mann, wanted a bigger half-point jump to four point two five per cent.

It is the first increase since August 2023, according to Euronews. Rates had been drifting down from a fifteen-year high of five point two five per cent before the US and Israel attacked Iran on 28 February.

The move was widely expected, but the vote split still caught some watchers off guard. Sterling climbed to its strongest level since mid-September after the decision, according to Trading Economics.

Why the war is driving prices

The committee pointed to the conflict in the Middle East, now in its ninth month, which has disrupted the transport and supply of energy and pushed global prices higher from an already elevated level. Euronews adds that bottlenecks in the Strait of Hormuz have squeezed global oil and gas supplies.

UK inflation hit three point five per cent in September, an eleven-month high and well above the two per cent target. The Bank now expects it to climb to around five per cent by the middle of next year, up from an earlier forecast of three point two per cent, as higher energy costs reach household and business bills.

The Bank also said there is still limited evidence that those costs are spilling over into other prices and wages. Even so, it warned that "the degree of inflationary pressure in the pipeline is now sufficient to warrant an increase in Bank Rate."

Bailey signals more could follow

Governor Andrew Bailey was careful with his words. He said the rise "shouldn't be seen as the first in an inevitable long sequence of hikes," but added that unless the Middle East conflict is resolved, it does not look like the last one either.

Reuters reported that the Bank warned at least one more increase was likely if the conflict continues, and it noted the hit to Prime Minister Andy Burnham, who has been trying to ease cost of living pressure, according to Reuters via Investing.com.

Markets are not shy about the next step. Trading Economics says traders now price in further tightening, while a survey of market participants had pointed to four per cent in November and four point two five per cent in February.

Growth, mortgages and your wallet

There was one bright spot. The Bank raised its growth forecasts, now expecting the UK economy to expand one point six per cent this year and one point three per cent in 2027, up from one point one per cent for both years in July.

Borrowers feel the sting first. Euronews notes that benchmark two-year mortgage rates have already risen by nearly half a percentage point since the start of September, so many people were bracing for this before the announcement.

Savers get a small win, since higher rates usually mean better returns on cash. The catch is that if inflation hits five per cent, those returns could still lose ground against rising prices.

The UK is not alone. The US Federal Reserve and the European Central Bank have also raised rates in response to war-fuelled inflation, and what each does next depends largely on energy prices. For more finance and world stories, browse the world desk and the politics desk at GenZ NewZ. The next Bank of England decision is due on 17 December.