A downward revision has been made to GDP, a key measure of economic growth, according to a Friday morning announcement from the Office for National Statistics at ONS.
Instead of remaining stagnant as was first thought, the economy shrank by 0.1% in the three months from July to September.
Growth of 0.2% was what economists had anticipated.
A country is technically in recession after two three-month periods of a shrinking economy.
The country will be formally in a recession if the final data for the fourth quarter of 2023, from October to December, which will be released next year, shows a contraction.
Another amendment was made to the second quarter of this year, from April to June. Rather than growing 0.2%, as was previously announced, the ONS has said there was actually no growth.