The sitcom averaged 1.24m (6.3%) for BBC Two at 10pm, despite a lead-in of just 1.01m (4.4%) from Maestro at the Opera. Mastermind (1.78m/8.4%) and Gardeners' World (2.13m/9.1%) aired earlier.
Have I Got News For You (5.14m/22.3%) and Not Going Out (4.15m/18.5%) on BBC One overwhelmed Piers Morgan's Life Stories, which mustered 3.99m (17.5%) for ITV1 at 9pm (+1: 245k) for its Dennis Waterman interview.
Would I Lie To You? amused 3.23m (13.8%) at 8.30pm, while The Graham Norton Show entertained 3.42m (23.1%) from 10.35pm.
Channel 4's comedy night continued steadily as 8 Out of 10 Cats grabbed 1.02m (4.4%) at 9pm (+1: 303k), 943k (4.2%) watched impressions show Very Important People half-an-hour later, and Alan Carr: Chatty Man had 1.66m (9.4%) at 10pm (+1: 254k).
Meanwhile, The Mentalist was Channel 5's most-watched programme with 1.48m (6.5%).
Overall, ITV1 led primetime with 22.1% (+1: 0.7%), beating BBC One's 20%. BBC Two managed third place with 6.6%, ahead of Channel 4's 5% (+1: 0.9%), and Channel 5's 3.9% (+1: 0.2%).
Action thriller Taken appealed to 1m (4.8%) on Film4 from 9pm.
BARB ratings data supplied by Attentional