UK inflation has risen to its highest level in eight months, adding to pressure on the Bank of England to keep interest rates unchanged on Thursday despite a slowdown in the British economy.

The consumer prices index rose by 2.6% last month from 2.3% in October, driven by the rising cost of petrol, groceries and an increase in tobacco duty in the budget.

The reading from the Office for National Statistics, which matched City economists’ forecasts, showed the headline rate rising further above the Bank’s 2% target for a second consecutive month.

The ONS chief economist, Grant Fitzner, said: “Inflation rose again this month as prices of motor fuel and clothing increased this year but fell a year ago. This was offset partially by air fares, which traditionally dip at this time of year, but had their largest drop in November since records began.”

The latest snapshot showed the average price of petrol rose by 0.8p a litre between October and November 2024 to stand at 134.8p a litre, while the price of diesel rose by 1.4p a litre to 140.5p. Air fares fell by 19.3% on the month, compared with a fall of 13.9% a year ago.

Economists said the reading would all but guarantee the Bank of England keeps interest rates on hold at the current level of 4.75% on Thursday amid concerns over persistently high inflation. Figures on Tuesday showed annual wage growth accelerated to 5.2% in October, adding to pressure on the Bank to resist calls for a reduction in borrowing costs.

Financial markets indicate a 90% probability of a hold decision. “Rising inflation will make the [Bank’s rate-setting] monetary policy committee nervous,” said Thomas Pugh, an economist at the accountancy firm RSM UK.

“While the MPC won’t want to drive the economy into stagnation, or worse an actual recession, the priority will be bearing down on inflation given that consumers inflation expectations are climbing again – even if that means a period of slower growth.”

The Bank had forecast inflation would rise towards the end of the year after temporarily falling below 2% in September. Inflation has dropped from a peak of more than 11% in the second half of 2022 after Russia’s invasion of Ukraine fuelled a rise in energy prices.

However, there are signs of the economy losing momentum after gross domestic product unexpectedly fell by 0.1% in October. Business surveys also show that employment levels are falling at the fastest pace since the global financial crisis in 2009 outside the Covid pandemic.

Paul Nowak, the general secretary of the Trades Union Congress, said that despite the recent rise, inflation had come down more quickly than anticipated over the past year. “Families and businesses remain under pressure from the steep increase in the cost of living.

“The latest GDP and employment figures show the economy is still fragile, and the priority must be turning this around. So, it’s vital the Bank of England keeps moving and makes another interest rate cut tomorrow,” he said.

Core inflation, which excludes volatile items including energy, food, alcohol and tobacco, also rose from 3.3% in October to 3.5% in November, marginally below a 3.6% forecast among City economists.

Andrew Bailey, the Bank’s governor, has said that how businesses react to the government increasing the rate of employer national insurance contributions (NICs) in the autumn budget is the “biggest issue” facing the economy.

Rachel Reeves announced in October that the rate of employer NICs would increase from 13.8% to 15% in April to raise £25bn for the exchequer, aiming to plug what she termed a “black hole” in the public finances left by the Conservatives.

The chancellor said the figures showed the government had “more to do” to support households. “I know families are still struggling with the cost of living and today’s figures are a reminder that for too long the economy has not worked for working people.

“I am fighting to put more money in the pockets of working people. That’s why at the budget we protected their payslips with no rise in their national insurance, income tax or VAT, boosted the national living wage by £1,400 and froze fuel duty.”

Business leaders have warned the decision will hit jobs and force employers to pass on the higher costs by raising prices. Sanjay Raja, the chief UK economist at Deutsche Bank, said: “The MPC will be cognisant of this heading into its final decision of the year. Put bluntly, the MPC is some way away from declaring victory on inflation.”

The Bank cut interest rates for a second time in November despite warning that Reeves’s budget would add to near-term inflationary pressures while boosting growth in the economy.

Threadneedle Street raised borrowing costs from a record low of 0.1% in December 2021 to as high as 5.25% in response to soaring inflation. Although the headline rate of inflation is expected to remain above 2% throughout next year, City economists anticipate further interest rate cuts to as low as 4% by the end of 2025.