TV
The programme, which featured newsreader Natasha Kaplinsky discovering her family roots, held a 29.5% share in its slot.
On ITV1, Hell's Kitchen suffered against the genealogy programme, but still managed 3.9 million viewers and a 17.5% share - its second highest audience so far since the series began on Monday.
BBC Two pulled in 2 million viewers for Mock the Week at 9pm, while Steve Coogan comedy Saxondale managed 1.3 million and a 5.8% share at 9.30pm.
A repeat of Channel 4's documentary 9/11: the Falling Man attracted 1.6 million and a 7.4% share at 9pm, and the return of Five's The Hotel Inspector took 1.3 million and a 5.9% share in the same slot.
However, a new series of Five's Suburban Shootout only attracted 518,000 viewers and a 3.1% share in its 65-minute slot at 10pm.
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