The Mill launched to over 2 million viewers on Sunday evening, according to overnight figures.
John Fay's 19th century drama interested 2.46m (10.3%) at 8pm on Channel 4, with a further 340,000 (1.5%) on +1. The finale of The Returned followed with 927k (4.1%) at 9pm (117k/0.7% on +1).
On BBC One, Antiques Roadshow appealed to 4.39m (23.0%) at 7pm, while Countryfile was the most-watched show of the night with 5.48m (23.0%) at 8pm. The White Queen continued with 3.54m (15.5%) at 9pm.
BBC Two's Top Gear gained over 400k viewers from last week to 4.56m (19.1%) at 8pm. Documentary The Mystery of Rome's X Tomb was seen by 2.05m (9.0%) at 9pm.
On ITV, Tipping Point: Lucky Stars quizzed 3.59m (18.9%) at 7pm (101k/0.4%), followed by All Star Mr & Mrs with 3.06m (12.8%) at 8pm (298k/1.3%). Law & Order: UK held steady at 4.30m (18.8%) at 9pm (331k/2.0%).
Channel 5's latest episode of Once Upon a Time entertained 756k (3.2%) at 8pm (116k/0.5%). Big Brother continued with 1.38m (6.0%) at 9pm (230k/1.4%).
BBC Three's new episodes of Family Guy tickled 1.30m (6.8%) at 10pm and 1.06m (6.7%) at 10.30pm.
