UK Inflation Jumps to 3.5% as Goods Hit a Three-Year High
UK consumer price inflation rose to 3.5% in the 12 months to September 2026, up from 3.1% and the highest rate since October 2025. Goods inflation hit 3.2%, its highest since September 2023, as motor fuel prices climbed 29.8% on the year, while food inflation held at 1.3%.
01Telemetry
Key findings at a glance
- 3.5%UK CPI annual inflation in the 12 months to September 2026, the highest rate since October 2025
- 3.6%CPIH annual inflation, the ONS's most comprehensive measure, up from 3.3% in August
- 3.2%CPI goods annual inflation, up from 2.7% and the highest rate since September 2023
- 3.7%CPI services annual inflation, up from 3.4% in August
- 2.8%core CPI excluding energy, food, alcohol and tobacco, up from 2.6% in August
- 29.8%annual motor fuel inflation, up from 23.0% and the highest rate since August 2022
- 169.5paverage price of a litre of petrol in September 2026, the highest since August 2022
- 192.5paverage price of a litre of diesel in September 2026, the highest since July 2022
- 1.3%food and non-alcoholic beverages annual inflation, unchanged for three months
- 2.3%recreation and culture annual inflation, up from 1.6%, led by live music and game downloads
- 5.8%communication annual inflation, up from 5.3% in August
- 3.8%restaurants and hotels annual inflation, down from 4.1% and the largest drag on the rate
02Scope
What the report covers
The Office for National Statistics published Consumer price inflation, UK: September 2026 on 21 October 2026. It is the monthly release behind the UK's headline inflation rate, covering the Consumer Prices Index (CPI), CPIH (which adds owner occupiers' housing costs and Council Tax) and the legacy Retail Prices Index. CPI rose 3.5% in the 12 months to September, up from 3.1% in August, and 0.4% in the month itself, against little change a year earlier. CPIH rose 3.6%, up from 3.3%. It follows our report on the August figures, when the rise was a fuel shock and both services and core inflation stood still.
This month both moved. CPI goods inflation rose from 2.7% to 3.2%, the highest since September 2023, and CPI services from 3.4% to 3.7%. Core CPI, which strips out energy, food, alcohol and tobacco, rose from 2.6% to 2.8%. Transport made the largest upward contribution: motor fuel prices were 29.8% higher than a year earlier, the steepest rate since August 2022, with petrol averaging 169.5p a litre (up 8.2p on the month) and diesel 192.5p (up 10.7p). The ONS puts the largest upward contribution to services down to air fares, which fell 19.5% between August and September against a 28.8% fall a year earlier. In other words, fares fell by less than last year rather than rising.
Elsewhere the picture is uneven. Recreation and culture inflation rose from 1.6% to 2.3%, led by live music and computer game downloads, and the ONS says the end of the government's Great British Summer Savings scheme on 1 September probably lifted prices for cultural events, historic monuments and cinema admissions, though without a substantial effect on the headline rate. Communication rose to 5.8%. Restaurants and hotels eased from 4.1% to 3.8%, the largest downward contribution, because hotel prices rose less than they did a year earlier. Food and non-alcoholic beverages held at 1.3% for a third month, a rate last lower in September 2021, and clothing and footwear sits at 0.1%.
03Briefing
What this means for UK marketers
In August the question was whether inflation would stay a fuel story. September says it is starting to spread: core and services both rose, although the goods jump was still mostly energy. The pipeline points the same way. The ONS producer price figures released the same morning show factory gate prices up 4.6% on the year, the largest rise since April 2023, with input prices up 8.3%. Manufacturers pass costs on with a lag, so if you sell physical products, plan Q4 and Q1 pricing on the assumption that supplier increases are still coming.
For ecommerce, diesel at 192.5p a litre is the number to watch. Courier fuel surcharges typically track diesel, so a free-delivery threshold set in spring now subsidises more of every basket. Review the threshold and the delivery promise before Black Friday on 27 November. If margins are tightening, cut wasted spend before you cut reach: splitting Shopping campaigns by margin stops low-margin lines absorbing budget, and it is the first thing to check in any Google Ads account for an ecommerce business.
Clothing at 0.1% and food at 1.3% mean shoppers will notice any price rise in those aisles. Fashion and homeware brands cannot blame inflation when their own category is flat, so Q4 margin has to come from mix, bundles and delivery economics rather than list prices. Grocery and FMCG brands face the opposite problem: the Food and Drink Federation forecasts food inflation of 3.9% by December, peaking at 6.4% in July 2027, so value messaging will matter more next year than it does now.
Then timing. Bank Rate is 3.75% and the next Monetary Policy Committee decision is on 5 November. A headline rate moving away from the 2% target makes a cut harder to argue for. The October inflation figures land on 18 November, nine days before Black Friday, so plan promotions on today's numbers. Demand has held up so far: online spending was up 10.1% year on year in the three months to August.
04Method
How they got the data
Check the method before you quote the number.
The consumer price indices are built from prices collected manually from outlets around the country, prices gathered centrally online and by phone, and, since February 2026, supermarket scanner data. Scanner data now covers approximately 50% of the grocery market: instead of price collectors recording 25,000 grocery prices a month, the ONS uses around 300 million price points derived from sales of over a billion units each month, and still prices the rest of the grocery market manually in store and online. The traditionally sourced prices in this release were collected on or around 15 September 2026. The 2026 weights come from 2024 household final consumption expenditure in the national accounts. The full approach is set out in the ONS consumer prices indices technical guidance.
CPIH is the ONS's most comprehensive measure because it adds owner occupiers' housing costs and Council Tax. Owner occupiers' housing costs account for approximately 18% of CPIH and explain most of the gap between the two headline rates. CPI is produced to international standards based on the Harmonised Index of Consumer Prices and is the measure used in the government's inflation target. Both are accredited official statistics. Two caveats apply to month-to-month reading: the ONS does not yet publish seasonally adjusted CPI or CPIH, so monthly movements include normal seasonal patterns, and all flight prices in the release were collected after the outbreak of the Middle East conflict on 28 February 2026.
