More than nine million viewers tuned into the final episode of Line of Duty on Sunday, giving it the biggest overnight audience of 2019 so far.
The tense conclusion to the BBC One drama’s fifth series attracted an average audience of 9.1 million, according to overnight figures.
Charlotte Moore, the BBC’s director of content, said it was “fantastic to see such a big audience” for the show.
Critics said the episode was “breathtaking” and “deeply satisfying”.
Yet some expressed reservations about the series as a whole, saying it has been “lacklustre” and the “weakest” to date.
The BBC has already commissioned a sixth series from writer Jed Mercurio, who also wrote Bodyguard.
Line of Duty’s figures are the highest for a drama since last year’s Bodyguard finale, which drew an overnight audience of 10.4 million last September.