The comedy, starring Lee Mack and Tim Vine, averaged 4.75m (19.4%) for BBC One from 8.30pm. It was preceded by Come Fly With Me, which amused 6.49m (25.2%).
The two shows easily outperformed Martin Clunes: Man To Mantas, after the programme - featuring the actor swimming with manta rays - pulled in just 3.83m (15.5%) on ITV1 in the 9pm hour.
Earlier on ITV1, Tonight: Too Young To Care - Too Much Too Young grabbed 2.64m (10.7%) between 7.30pm and 8pm.
Celebrity Mastermind continued with 5.65m (23.8%) on BBC One from 7pm, before DIY SOS: The Big Build Nottingham took 5.23m (20.1%) in the 8pm hour.
The penultimate edition of Channel 4's Famous And Fearless fetched 1.16m (4.5%) from 8pm, down 430k on the previous night's episode. An additional 142k (0.6%) watched the show on timeshift. Derren Brown: Enigma brought in 1.71m (8.2%) from 9.30pm and 213k (1.6%) on +1.
Over at BBC Two, coverage of the BDO World Darts Championship took 1.26m (5.2%) in the 7pm hour and Edwardian Farm had 1.97m (7.6%) from 8pm. New two-part war drama The Sinking of the Laconia captivated 2.93m (12.1%) between 9pm and 10.15pm.
Channel 5's Zoo Days grabbed 619k (2.5%) from 7.30pm, before Natureshock: The Seal Ripper had 682k (2.6%). A screening of SWAT brought in 1.29m (6%) from 9pm.
Overall, BBC One won primetime with 23.3% against ITV1's 21.4%. BBC Two came in third with 8.4%, followed by Channel 4 with 5.4% (+1: 0.6%) and Channel 5 with 3.9%.
Elsewhere, the biggest multichannel audience of the night went to highlights of The Ashes, which pulled in 957k (4.8%) on ITV4 from 10pm.
Kerry Katona: The Next Chapter appealed to 770k (3.1%) on ITV2 in the 9pm hour and 218k (1.1%) on timeshift.
BARB ratings data supplied by Attentional