The episode 'The Other Woman' averaged 39k (0.2%) in the 9pm hour, following Friday Night Lights which took 28k (0.1%).
Elsewhere, Alcatraz resumed with 459k (2%) on Watch.
On the terrestrials, Silk dropped from 5.3m last week to 4.84m (21.6%) on BBC One. However, it was still dominant in the 9pm hour and comfortably beat ITV1's Prince Charles: The Royal Restoration which had 2.06m (9.1%) and 135k (0.8%) on timeshift.
Earlier on ITV1, Countrywise Jubilee managed 1.83m (9%) in the 8pm hour.
BBC Two showed Springwatch (2.23m/11%) and Great Ormond Street (2.07m/9.2%).
Channel 4's Embarrassing Bodies drew 1.58m (7.8%) with an additional 388k (1.7%) on timeshift. Jimmy and the Giant Supermarket followed with 1.44m (6.4%) from 9pm (+1: 243k/1.4%).
The latest CSI grabbed 1.89m (8.4%) on Channel 5 (+1: 144k/0.8%) with a repeat of CSI: NY taking 1.05m (6%) afterwards. War Hero in My Family took 743k (3.7%) earlier in the 8pm hour.
Overall, BBC One eased to primetime victory with 23.6% ahead of ITV1's 12.4% (+1: 0.5%). BBC Two came third with 8.7% followed by Channel 4 with 5.4% (+1: 1.2%) and Channel 5 with 5% (+1: 0.2%).
BARB ratings data supplied by Attentional