Series eight of crime drama New Tricks, which stars Amanda Redman and James Bolam, premiered with 8.25m (35%) on BBC One in the 9pm hour for the episode 'Old Fossils'.
The show easily outperformed Babies Behind Bars, a documentary following the stories of pregnant inmates at a US women's prison, which pulled in 2.97m (12.6%) on ITV1 and 151k (0.8%) on +1.
On Channel 4, Sirens continued with 1.09m (6.1%) from 10pm, down 530k on last week's debut episode. A further with 136k (1.4%) watched the show on +1.
Earlier, Fake Britain fetched 3.14m (15.9%) on BBC One from 7.30pm, while The Unforgettable Frankie Howard entertained 2.71m (12.7%) on ITV1 from 8pm and 103k (0.4%) on timeshift. Panorama grabbed 3.3m (14.7%) on BBC One from 8.30pm.
The Truth About Wildlife and Hampton Court Palace Flower Show 2011 scooped 840k (4.7%) and 1.3m (6.6%) respectively on BBC Two in the 7pm hour. University Challenge and Antiques Master captivated 2.39m (11.2%) and 1.75m (7.8%) in the 8pm hour. Made In Britain enchanted 1.15m (4.9%) from 9pm and James May's Things You Need to Know had 1.05m (5.3%) from 10pm.
Channel 4's Dispatches: Landlords from Hell pulled in 1.58m (7.2%) in the 8pm hour and 238k (1%) on +1. Embarrassing Bodies enthralled 1.97m (8.4%) from 9pm and 380k (2.1%) on timeshift.
How Do They Do It? appealed to 330k (1.7%) on Channel 5 from 7.30pm, before Police Interceptors arrested 1.05m (4.8%) from 8pm. The Restaurant Inspector judged 1.04m (4.4%) from 9pm. A showing of Conspiracy Theory mustered 662k (5.7%) from 10pm.
Overall, BBC One won primetime with 26% against ITV1's 20.6% (+1: 0.4%). BBC Two and Channel 4 tied for third place with 6.4% (C4+1: 1.1%), followed by Channel 5's 3.6%.
Elsewhere, World's Craziest Fools, presented by former A-Team star Mr. T, entertained 848k (5.4%) on BBC Three from 10.30pm, up 232k week-on-week.
Kill It, Cut It, Use It shocked 506k (2.1%) on BBC Three in the 9pm hour, just beating NCIS's 497k (2.1%) on Five USA.
BARB ratings data supplied by Attentional