The BBC One show averaged 7.6m and 32.8% of the audience share at 7pm. The figures show that the instalment attracted 1.2m more viewers than the second episode of the 2013 series.
Meanwhile, in the same time slot on ITV, 3.64m (15.86%) tuned in to see Dan Osborne and Danielle Lloyd dive their way into the semi-finals of Splash! An added 209,000 (0.93%) caught up with the action an hour later on +1.
Back on BBC One, Nick Knowle's National Lottery: Who Dares Wins hooked 5.13m (23.2%) at 8.20pm, followed by the latest episode of Casualty with 4.86m (21.6%) at 9.10pm.
BBC Two's Live Snooker: The Masters entertained 1.51m (6.67%) at 7pm, while James May's Toy Stories - which saw the Top Gear presenter attempt to create a life-size model of a Spitfire - was seen by 940k (4.39%).
Take Me Out scored the highest primetime ratings for ITV, with 3.94m (17.61%) tuning in to watch Paddy McGuinness play matchmaker at 8.30pm.
The Jonathan Ross Show entertained 2.62m (12.5%) at 9.45pm, with guests including Russell Brand, Dermot O'Leary, Goldie Hawn and James Blunt.
Channel 4's repeat of Britain's Killer Storms pulled in 1.11m (4.88%) at 7.30pm, while US drama Hostages continued with 1.05m (4.66%) at 9pm. A 10pm showing of Nicholas Cage's Knowing was seen by 800k (5.15%).
Over on Channel 5, Celebrity Big Brother continued to offer the channel's highest primetime ratings, with 1.72m watching as Lee Ryan met his supposed superfan.
Earlier in the evening, an NCIS double-bill attracted 613k (2.71%) at 7.45pm and 722k (3.21%) at 8.40pm.
On the multichannels, The Bridge did well for BBC Four, with 1.04m (4.63%) tuning into the murder drama at 9pm and 892k (4.46%) watching the second episode of the evening at 10pm.
ITV3's Doc Martin drew in 733k (3.28%) with a repeat of the series three premiere at 8pm, while ITV2 attracted 704.9k (3.58%) with a showing of Pierce Brosnan's The World Is Not Enough at 9pm.
BARB ratings data supplied by Attentional
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