At 7pm, 5.58m (25.3%) watched Tyger Drew-Honey, Omid Djalili and Dani Harmer make it through to the Let's Dance final.
BBC One had a clean sweep, with 6.05pm's Pointless Celebrities (4.2m/21.3%), 8.20pm's Who Dares Wins (5.27m/22.9%) and 9.10pm's Casualty (5.17m/23.4%) also winning their respective slots.
Meanwhile on ITV1, Take Me Out dipped to 4.62m (20%) at 8.05pm (+1: 182k), after which The Jonathan Ross Show remained steady with 2.91m (13.6%) at 9.20pm.
All Star Family Fortunes kicked off the evening with 3.41m (17.5%) at 6.05pm (+1: 274k), then You've Been Framed entertained 4.36m (21.5%) at 7.05pm (+1: 350k), and 4.64m (20.8%) were amused by Harry Hill's TV Burp at 7.35pm (+1: 336k).
BBC Two's Story of... duo performed solidly, with 1.64m (7.3%) for Light Entertainment (7.20pm) and 1.67m (7.2%) for Musicals (8.20pm). Pop Life: I'm in a Girl Group! (1.08m/5%) followed.
Once again, CSI: NY (1.62m/8.5%) pulled in impressive numbers at 10pm, prior to which NCIS gripped 1.18m (4.9%) in the 8pm hour, and ordinary CSI mustered just 991k (4.2%) at 9pm.
Elsewhere, a Big Fat Gypsy Weddings catchup logged 1.22m (5.3%) for Channel 4 at 8.10pm (+1: 354k/1.6%), and George Lamb's The Bank Job climbed to 1.23m (5.6%) an hour later, adding 151k on timeshift.
Overall, BBC One convincingly led primetime with 23.9%, ahead of ITV1's 16.9% (+1: 1.2%), BBC Two's 6.7%, Channel 5's 5.5% (+1: 0.2%), and Channel 4's 4.8% (+1: 0.9%).
Over on the multichannels, ITV3 averaged 3.9% after strong audiences for Doc Martin (1.09m/4.8%) and Poirot (883k/4.3%).
Take Me Out: The Gossip fell to 591k (2.7%) for ITV2 at 9.20pm (+1: 133k).
BARB ratings data supplied by Attentional