UK Inflation Hits 3.4%, Delaying Rate Cut Hopes

UK inflation unexpectedly rose for the first time in five months, climbing to 3.4% in December and complicating the timeline for a potential interest rate cut from the Bank of England.

Data from the Office for National Statistics (ONS) confirmed the annual inflation rate, as measured by the consumer prices index (CPI), increased from 3.2% in November. This figure surpassed City economists' forecasts of a more modest rise to 3.3% and marks a reversal after months of falling or stagnant price growth.

While analysts believe the uptick is likely temporary, financial markets have almost entirely priced out the possibility of an interest rate cut by the Bank of England next month.

What's Driving the Price Spike?

The December inflation increase was largely fueled by volatile items and specific policy changes, rather than a broad resurgence in price pressures.

Key drivers include:

• Air Fares: A significant 28.6% surge in air travel costs occurred in December. While flight prices typically jump over the Christmas holiday, the increase was magnified when compared to an unusually low base in 2024.

• Tobacco Duties: Higher taxes on tobacco products, introduced by Chancellor Rachel Reeves in the autumn budget, took effect in December and contributed to the headline rate.

Martin Beck, chief economist at WPI Strategy, advised against alarm, stating, "December's uptick in inflation should not set alarm bells ringing. The increase was largely driven by temporary and technical factors, not a broader resurgence in price pressures."

A Deeper Look at the Inflation Data

Beneath the headline figure, the details paint a more complex picture of the UK economy. Core inflation, which excludes volatile food and energy prices, remained unchanged from November at an annual rate of 3.2%. This stability suggests underlying price pressures may not be accelerating.

However, the cost of groceries continued to climb over the holiday period. Annual food inflation rose to 4.5% from 4.2% in November, with the ONS highlighting rising prices for bread and cereals as a primary factor.

Figure 1: UK food inflation rose to 4.5% in December, with the ONS identifying rising prices for bread and cereals as a key driver.

Services inflation, a key metric for the Bank of England, edged up from 4.4% to 4.5%. Although this measure is watched closely for signs of domestic price pressures, the December rise was smaller than economists had feared.

Yael Selfin, chief economist at KPMG UK, noted that the Bank of England would likely look through this increase. "Despite services inflation increasing in December, this was not reflective of domestically generated price pressures and was largely driven by volatile categories, such as air fares," she said, adding that slowing wage growth should help ease services inflation in the coming months.

Bank of England Rate Cut Timeline Pushed Back

The stronger-than-expected CPI reading has prompted the Bank of England's Monetary Policy Committee (MPC) to maintain a cautious stance. City traders now see an interest rate cut in February as highly unlikely and are not fully pricing one in until June.

Despite the market's reaction, many economists still forecast a potential rate cut in April, provided that UK price and wage growth continue to soften. Bank of England Governor Andrew Bailey stated last month that he expects inflation to return to the MPC's 2% target by the middle of this year.

Economic Outlook and Government Response

Chancellor Rachel Reeves, who has made tackling the cost of living a central theme, pledged that 2026 would be the "year that Britain turns a corner" on inflation. "My number one focus is to cut the cost of living," she said, referencing measures from the budget including discounts on energy bills and freezes on rail fares and prescription charges.

In a separate report, the ONS revealed that private rental price growth is slowing. Average monthly rents increased by 4% in the year to December, down from 4.4% in November and the slowest pace since May 2022. Property portal Zoopla attributes this shift to an increase in available rental homes, as more first-time buyers are leaving the rental market due to improved mortgage conditions and slower house price growth.