Saturday's fifth audition in Manchester, which played host to the likes of Hazel Jackson and Chloe Victoria, averaged 10.51m (43.7%) on ITV1, and 552k on HD - making a total of 11.07m (46%) between 7.30pm and 8.45pm. The audience peaked at 12.09m (50.1%) at 8.15pm
Meanwhile, at the same time, Merlin mustered 4.99m (20.9%). The conclusion to two-part story 'The Tears Of Uther Pendragon' failed to attract the same interest as last week, with 600k deserting the family drama between 7.30pm and 8.15pm.
Elsewhere on BBC One, Casualty logged 4.6m (19.9%) at 8.25pm, and the second series launch of Michael McIntyre's Comedy Roadshow amused 4.51m (21.2%) at 9.15pm.
Earlier on the channel, Richard Hammond's Celebrity Total Wipeout started with 4.57m (24.3%) for BBC One at 6.30pm, securing a win over Vernon Kay's All Star Family Fortunes, which had 4.15m (21.7%) for ITV1.
Phil Collins: One Night Only put in 4.33m (19.6%), plus an HD audience of 182k, after The X Factor. Charlie Wilson's War followed with just 1.35m (8.2%).
BBC Two's Newman: Saint or Sinner?, Vatican: The Hidden World and QI XL interested 1.06m (5.2%), 1.19m (4.9%) and 1.88m (8.5%), while film The Special Relationship followed with 1.02m (5.4%).
Channel 4 found 1.05m (4.4%) for Stephen Hawking's Universe at 7.45pm, then its screening of Blade: Trinity appealed to 1.22m (6.3%) from 9pm. Over on Five, repeats of CSI picked up 1.09m (4.9%) and 1.14m (6%) and prior to that, NCIS managed 861k (3.6%).
Overall, ITV1 was ahead of BBC One in primetime, with 25.4% (HD: 1.2%) to 21.4%. BBC Two was far away in third with 5.8%, Channel 4 followed with 5% (+1: 0.5%), and Five had 4.5%.
Top of the multichannels was The Xtra Factor, which pulled in a steady 1.33m (6%) for ITV2, after which a Cheryl Cole Video Exclusive grabbed 834k (4%).
BARB ratings data supplied by Attentional