The Office for National Statistics (ONS) said the consumer prices index (CPI) measure rose from an annual rate of 9.9% in August to match the recent 40-year high seen in July.
The report showed the largest upwards contribution came from food costs, while fuel provided the greatest downside pressure.
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It said the pace of food price rises was at its highest since April 1980 – running at an annual rate of 14.5% – with bread and cereals, meat products, milk, cheese and eggs leading the increases, the ONS reported.
