The second episode of this year's series pulled in an average of 9.43m (45.4%) in the hour from 7.30pm, down slightly on the 10.19m (48.2%) for last week's premiere. Spinoff show The Xtra Factor was also a hit, drawing 1.23m to ITV2 at 8.30pm.
Earlier on ITV1, a screening of Sean Connery's Goldfinger engaged 1.6m (13.6%) over two hours from 4pm, then at 6.30pm, Funniest Ever You've Been Framed! had 4.84m (26.8%). After The X Factor, a celebrity edition of Who Wants To Be A Millionaire? with Johnny Vaughan and Denise van Outen interested 5.48m (25.6%). The 1999 remake of The Thomas Crown Affair starring Pierce Brosnan delivered 2.2m (12.5%) over two hours from 9.30pm.
BBC One was in second place for most of primetime, with reality show Last Choir Standing proving to be the most popular show in its lineup. The latest performances show, broadcast over an hour from 6.30pm, managed 4.52m (25%) and the later results show had 4.62m (21.6%) between 8.20pm and 8.45pm.
The final episode of National Lottery quiz show This Time Tomorrow was seen by 3.75m (18.2%) from 7.30pm, and at 8.45pm, a repeat of The Inspector Lynley Mysteries intrigued 4.37m (20.8%) for 90 minutes.
Channel 4's documentary repeat Life After People, exploring what would happen to the planet if all humans suddenly became extinct, pulled in 1.39m (6.6%) over 90 minutes from 7.30pm. The latest Big Brother update had 2.55m (12.1%) in the 9pm hour, then a screening of Liz Hurley comedy film Bedazzled delivered 1.01m (6.5%) from 10pm to 11.45pm.
Five was above the 1 million mark throughout primetime thanks to its lineup of US drama repeats. A double-bill of NCIS had 1.03m (4.9%) at 7.30pm and 1.55m (7.2%) at 8.30pm, then at 9.30pm, CSI logged the channel's highest audience of the day, with 1.56m (7.8%). Law & Order: Criminal Intent rounded off the evening with 1.1m (7.4%) from 10.30pm.
BBC Two's peak audience was 2.1m (11.2%) for a vintage episode of Dad's Army at 7pm.
Meanwhile, UKTV Gold enjoyed an unusually strong night with its screening of Jim Carrey comedy Bruce Almighty. The film, shown between 9pm and 10.50pm, amused 775,000.
Five US had 375,000 for its showing of the first Hellboy movie at 9pm, and on Dave, Jack Dee Live At The Apollo notched up 359,000 at 9.30pm.