The show was watched by 4.5m (17.3%) from 9pm last night, compared to 7.05m (28.4%) seven days previously.
Meanwhile, Mrs Brown's Boys grabbed 5.2m (19.8%) from 9.30pm, while Match of the Day scored 3.2m (17.3%) from 10.30pm.
ITV1's Endeavour guided the channel to primetime victory, averaging 6.51m (26.9%) from 9pm (+1: 259k/1.5%). Cornwall with Caroline Quentin attracted 3.88m (13.8%) earlier from 8pm (+1: 225k/0.9%).
BBC Two began with a lineup of Baking Made Easy (1.53m/6%), A Question of Taste (1.34m/5.1%), University Challenge (2.72m/9.7%) and An Island Parish (2.29m/8.2%). Armando's Tale of Charles Dickens from 9pm was seen by 924k (3.5%), before 720k (4%) caught Revolutionary Road.
Over on Channel 4, Location, Location, Location took 1.67m (6.3%) from 7.30pm with a further 253k (0.9%) on +1. The Million Pound Drop mash-up followed with 1.64m (5.9%) and 354k (1.3%) on +1, while the mash-up of Come Dine with Me/Made in Chelsea cooked up 1.42m (5%) from 8.15pm (+1: 314k/1.2%).
River Cottage drew 1.59m (5.8%) afterwards (+1: 230k/0.9%), Countdown/8 Out of 10 Cats amused 3.04m/7.8% (+1: 299k/1.3%) before 1.71m (6.6%) tuned in for a second instalment of The Million Pound Drop from 9.35pm (+1: 266k/1.3%).
The Bank Job capped primetime off for Channel 4, winning 1.04m (4.8%) with an additional 142k (1.2%) on +1.
Channel 5 started with The Hotel Inspector from 7pm, which had 428k (1.6%). The Greatest Ever Carry On Films entertained 610k (2.2%) from 8pm, and 1.11m (4.9%) saw the film Hitch.
Overall, ITV1 won the night with 26.7% (+1: 1%) ahead of BBC One's 20.9%. Channel 4 ended with 5.9% (+1: 0.9%) beating BBC Two (5.4%). Channel 5 had 3.2%.
BARB ratings data supplied by Attentional