Jonathan Strange & Mr Norrell showed a sharp week-on-week ratings drop this Sunday (May 24), according to overnight data.
Episode two of the drama, based on Susanna Clarke's acclaimed bestseller, aired to 2.57m (13%) at 9pm on BBC One - down on last week's corresponding overnight audience of 4.53m.
BBC One's Countryfile led the night with an audience of 5.77m (33.4%) at 7pm, followed by 5.35m (28.1%) for the Antiques Roadshow at 8pm.
Match of the Day, featuring highlights from the final day of the Premier League season, was seen by 3.09m (27.6%) at 10.30pm.
Over on ITV, episode four of World War II-era drama Home Fires led the night for the channel, with 4.47m (22.6%) tuning in at 9pm.
Earlier in the night, Warwick Davis' Celebrity Squares was seen by 1.57m at 7.15pm, followed by an overnight audience of 3.08m (16.2%) for Sunday Night at the London Palladium at 8pm.
BBC Two opened primetime with 716k (4.1%) for A Very British Airline at 7pm. Demolition was down slightly on last week with 1.44m (7.6%) at 8pm, while Armada: 12 Days to Save England intrigued 1.8m (9.1%) at 9pm.
Channel 4's highest-rated programme in primetime on Sunday was a screening of the Danny Boyle thriller Trance, airing to 992k (5.6%) from 9pm.
Over on Channel 5, the latest instalment of Big Brother attracted an audience of 849k (4.3%), while Stevie Wonder: An All-Star Grammy Salute entertained 625k (4.7%) at 10pm.
BBC Three's coverage of Radio 1's Big Weekend from Norwich peaked with 466k (2.4%) at 9pm, with performances from Taylor Swift and George Ezra.