The finale on Wednesday night averaged more than 13 million viewers.
BBC baking competition The Great British Bake Off drew its highest overnight ratings ever with the final episode of its sixth season on Wednesday night and became the most-watched program of 2015 in the U.K.
The episode averaged 13.4 million viewers, according to overnight data released on Thursday. That amounted to a share of 54.8 percent of people watching TV in Britain at the time. The audience peaked with 14.5 million viewers. Observers said that tops all other overnight ratings in Britain this year.
The launch episode of the sixth season, which was the show's second on the U.K. public broadcaster's flagship network BBC One, had reached an average audience of 9.3 million, making it the show's best-ever season debut.
"Baked and off! #GBBO final watched by extraordinary 13.4m/54.8% overnights audience," tweeted Overnights.tv on Thursday.
The show features amateur bakers whose work is judged by experts. It has been credited with boosting interest in baking across the U.K.