Home Fires topped the ratings on Sunday (June 7), according to overnight figures.
ITV's World War II-era drama returned after a two-week break with 4.74m (22.2%) at 9pm, with a further 255,000 (1.7%) tuning in on +1.
Earlier in the evening, Catchphrase entertained 1.72m (10.7%) at 6.30pm (182k/1.0% on +1), before Celebrity Squares continued with 1.86m (10.3%) at 7.15pm (80k/0.4%).
Sunday Night at the Palladium appealed to 3.05m (14.8%) at 8pm (221k/1.0%).
Over on ITV2, Love Island opened to 434k (2.2%) at 9pm, as the revived reality show hosted by Caroline Flack got started in Mallorca.
BBC One's Formula One coverage was the second most-watched programme of the evening with 4.62m (25.0%) tuning in for the Canadian Grand Prix at 6.30pm. The latest episode of Jonathan Strange and Mr Norrell brought in 1.78m (8.3%) at 9pm.
Antiques Roadshow's temporary move to BBC Two dented its ratings with 2.54m (12.3%) at 8pm, while Armada: