took a 26.2% share of viewing for the third and final part of its Sally Wainwright-scripted series, beating BBC One by some distance.
A 'Motorway Cops' special brought in 4.3m viewers, earning a 17.4% share for at 9pm-10pm.
's food season continued with '', in which TV chef Hugh Fearnley-Whittingstall extended his campaign to improve poultry welfare by targeting change at the UK's biggest supermarket.
The 9pm-10pm programme attracted an audience of 2.5m and a share of 10.2%, with another 400,000 watching it on its Channel 4+1 outing.
BBC Two came close behind with 2.4m viewers for a Horizon documentary 'Why Are Thin People Not Fat?', winning a 9.7% share.
The multichannel highlight was the arrival of '90210', the sequel to 1990s teen drama 'Beverly Hills 90210', on UK screens via E4.
The extended 9pm-10.45pm opener garnered a 2.3% share of viewing with an audience of 518,000. It peaked at the beginning with 590,000 and finished with 425,000.
It was not enough to beat the audience for '24' on , as 619,000 (2.4%) tuned in at 9pm-10pm for the fifth episode of the seventh series.
Both came within the same ballpark as 's 800,000 viewers and 3.7% share for limp Bruce Willis action film 'Last Man Standing'.