The programme, which featured performances from Janey Cutler and Twist & Pulse, averaged 9.18m (43.2%) for ITV1 from 7.30pm, down 540k on the previous night's episode.
Harry Hill's TV Burp, which was aired in place of Coronation Street for the second night running in the wake of the shootings in Cumbria, attracted 5.85m (26.4%) from 9pm.
The Britain's Got Talent half-hour results show pulled in 9.34m (40.1%) for ITV1 from 9.30pm, helping the channel to comfortably dominate primetime.
Spinoff show Britain's Got More Talent brought in 660k (3.6%) for ITV2 from 10pm and 95k (0.9%) on timeshift.
On BBC One, Watchdog averaged 2.71m (12.3%) from 8pm, down 1.38m week-on-week.
In the 9pm hour, Have I Got News For You took 4.69m (21.1%) for the channel and comedy panel show Would I Lie To You? appealed to 2.84m (12.3%).
Location, Location, Location pulled in 1.44m (6.5%) for Channel 4 in the 8pm hour and 365k (1.6%) on timeshift. The last episode of Genius Of Britain delivered 700k (3.1%) from 9pm and 94k (1.5%) on timeshift. Charlie Brooker's You Have Been Watching attracted 630k (3.2%) from 10pm and 33k (0.3%) on timeshift.
The Culture Show brought in 530k (3%) for BBC Two from 7pm, followed by Springwatch 2010 with 1.98m (9%).
Britain's Greatest Machines With Chris Barrie attracted 343k (1.6%) to Five in the 8pm hour, then a screening of Desperado averaged 798k (3.9%) from 9pm.
Overall, ITV1 breezed to victory in primetime with 33.4% over BBC One's 18%. BBC Two came in third with 6.3%, followed by Channel 4 with 4.2% (+1: 0.7%) and Five with 2.8%.
Elsewhere, a new episode of The Simpsons featuring the voice of comedian Eddie Izzard pulled in 414k (2.1%) for Sky1 from 7.30pm.
Repeats of EastEnders and Junior Apprentice secured respective audiences of 1.69m (8.2%) and 617k (4.3%) for BBC Three from 10pm.
BARB ratings data supplied by Attentional