ITV1's long running crime drama 'Taggart' was the second most watched programme at 9pm, 4.4m viewers and a 19% share.
Channel 4's four-part documentary series 'Embarrassing Bodies' concluded with an impressive 2.7m viewers and an 11.7% share between 9pm-10pm, beating the broadcaster's 2.3m slot average.
Including Channel 4+1's time shifted audience, 'Embarrassing Bodies' pulled in 3.1m viewers and a 13.2% share.
The second episode of science-fiction series 'Heroes' sunk to a disappointing 2.5m viewers and a 10.7% share between 9pm-9.45pm, compared to 3.7m last week, as the second series gets underway.
Commentators have criticised the US show for becoming pedestrian and over-complicated, having given the programme a warm welcome when the first series made its UK debut last year.
Five's US medical drama 'House', starring British actor Hugh Laurie, was watched by 1.4m viewers and a 6.1% share between 9pm-10pm.
E4's new comedy drama 'The Inbetweeners' launched with a solid 323,000 viewers and a 1.5% share between 10pm-30pm, well above the 286,000 slot average. Including E4+1, the first episode drew 368,000 viewers and a 2.4% share.