Long Lost Family, featuring Davina McCall and Nicky Campbell reuniting lost family members, averaged 4.53m (21.2%) for ITV1 in the 9pm hour and 229k (1.3%) on +1. The show proved too strong for New Tricks, which grabbed 3.41m (16.6%) on BBC One.
Earlier, Tonight: The Great British Wedding enchanted 2.77m (14.8%) on ITV1 from 7.30pm and Watchdog had 3.71m (18.4%) on BBC One in the 8pm hour. Documentary Jon Venables: What Went Wrong? had 2.3m (16.6%) on BBC One from 10.45pm.
B&B reality series Three In A Bed attracted 1.01m (5%) to Channel 4 in the 8pm hour and 259k (1.2%) on +1. The Sex Education Show: Stop Pimping Our Kids was seen by 1.22m (5.7%) in the 9pm hour and 215k (1.2%) on +1. 10 O'Clock Live entertained 650k (3.7%).
Over at BBC Two, Live Snooker - The World Championship pocketed 1.14m (6.4%) in the 7pm hour, before The Animal's Guide To Britain took 1.31m (6.5%) from 8pm. A History Of Celtic Britain appealed to 1.61m (7.5%) in the 9pm hour and Rhod Gilbert's Work Experience amused 920k (4.7%) from 10pm.
Channel 5's How Do They Do It? educated 478k (2.6%) from 7.30pm, before documentary Gladiator: The True Story grabbed 673k (3.3%) in the 8pm hour. The Most Shocking Talent Show Moments appealed to 1.37m (8.3%) from 10pm.
Overall, ITV1 won primetime with 22.8% (+1: 0.7%) against BBC One's 20.7%. BBC Two came in third with 6.3%, ahead of Channel 5 with 4.8% and Channel 4 with 4.4% (+1: 0.9%).
Elsewhere, comedy panel show Celebrity Juice amused 1.17m (6.2%) on ITV2 from 10pm, the biggest multichannel audience of the night. A further 314k (2.8%) watched the show on timeshift.
Misbehaving Mums-To-Be shocked 477k (2.2%) on BBC Three in the 9pm hour, down 533k week-on-week. Russell Howard's Good News entertained 913k (5.8%) on the channel from 10.30pm.
BARB ratings data supplied by Attentional