Line Of Duty was once again the most watched show on Sunday night despite increased competition.
The latest episode of the BBC One drama posted a third weekly consecutive rise with 6.6 million viewers.
The series high is up 900,000 viewers on last weekend and up almost 2 million on two weeks ago.
The penultimate instalment of the six-part series topped the night's viewing figures, with Antiques Roadshow getting 5.4 million and Countryfile securing 6.4 million viewers earlier on BBC One.
Over on ITV, The Durrells and Grantchester both returned for new series with 5.5 million and 4.4 million viewers respectively.
The Durrells was down 900,000 viewers on last series' opener while Grantchester - which clashed with Line Of Duty at 9PM - was 600,000 below 2016's opening episode.
Earlier in the evening, Jason Manford's new wacky gameshow Bigheads premiered to 2.8 million viewers, up around a million on Phillip Schofield's 5 Gold Rings which ended its series last Sunday.
Elsewhere, on BBC Two, Top Gear climbed slightly from last weekend's series low as the run finished with 1.9 million viewers, the most watched programme for the channel yesterday.
On Channel 4, The Island with Bear Grylls kicked off its new series with 2 million viewers. The number is down around 600,000 viewers on last year's opener but up on both 2015 and 2014's respective premiere episodes.