United, starring Jack O'Connell, David Tennant and Dougray Scott, averaged 2.89m (12.8%) for BBC Two between 9pm and 10.30pm, while 346k (1.5%) tuned in on the BBC HD channel.
Channel 4's The Hotel, a new docusoap from the makers of One Born Every Minute, continued with 1.39m (6.1%) in the 8pm hour, down 650k on the previous week's debut episode. A further 219k (1.9%) watched the show on +1.
On BBC One, Britain's Royal Weddings, a two-part mini-series presented by Sophie Raworth, concluded with 3.45m (14.6%) in the 9pm hour. It was preceded on the channel by Antiques Roadshow, which had 4.74m (20.7%).
However, detective drama Lewis once more owned primetime, pulling in 5.66m (24.2%) on ITV1 between 8pm and 10pm, along with 240k (1.1%) on ITV1+1.
Countryfile grabbed 4.78m (25.1%) on BBC One in the 7pm hour, while The Cube boxed in 3.09m (18.8%) on ITV1 and 137k (0.6%) on timeshift. Later on BBC One, documentary Bee Gees - In Our Own Time enchanted 2.47m (15.5%) from 10.30pm.
On BBC Two, Live Snooker - The World Championship pocketed 710k (3.9%) between 7pm and 7.45pm, before a repeat of Top Gear - Bolivia Special revved up 1.63m (7.2%). Match Of The Day 2 scored with 2.32m (15.1%) from 10.30pm.
Channel 4's Come Dine With Me served up 1.32m (7%) in the 7pm hour and 196k (0.9%) on +1. Country House Rescue took 1.4m (5.9%) from 9pm and 205k (1.1%) on timeshift. A screening of Elizabeth fetched 800k (5.6%) from 10pm.
Showings of Bewitched and Ghostbusters roused 901k (5.5%) and 1.06m (4.6%) on Channel 5 between 6pm and 10pm. Zombie drama The Walking Dead scared up 1.16m (6.2%) between 10pm and 11.30pm.
Overall, ITV1 won primetime with 20.2% (+1: 1%) against BBC One's 19.1%. BBC Two came in third with 9.7%, followed by Channel 4 with 5.8% (+1: 0.9%) and Channel 5 with 5%.
Elsewhere, The Only Way Is Essex dazzled 922k (4.7%) on ITV2 from 10pm and 181k (1.5%) on timeshift.
BARB ratings data supplied by Attentional