2.1m tune in for Channel 4 sex show

The Sex Education Show vs Pornography attracted 2.08m (8.9%) for Channel 4 last night, according to early viewing figures.

The programme, which aired at 9pm, saw Anna Richardson visit students to give them sex advice, reveal mysteries of the female body, and investigate internet pornography.

A further 371k (2.3%) watched the show on Channel 4+1.

It was beaten by BBC One's Crimewatch, which logged 4.12m (17.7%) during the hour.

The penultimate episode of Law & Order: UK took 5.38m (23.1%) for ITV1, a drop of over 700k on last week's episode.

Extreme Fishing With Robson Green managed 1.6m (6.8%) for Five, while the latest episode of Heroes drew 1.71m (7.3%) for BBC Two.

Earlier, at 8pm, The Gadget Show pulled in 1.6m (6.7%) for Five, and 980k watched Channel 4's Dispatches: The Trouble With Boris, a profile of the London Mayor.

Over on BBC Two, Railway Walks interested 2.63m (11.2%) in the first half of the hour. Viewing figures then dropped to 2.52m (10.5%) during the screening of James Wong's Grow Your Own Drugs.

ITV1's How Safe Is Your Hospital?: Tonight was seen by 2.91m (12.5%) at 8pm, then BBC One's Panorama, which looked at the police deaths in Northern Ireland, averaged 2.16m (9%) between 8.30pm and 9pm.

Overall, ITV1 led primetime with an average share of 25.4% to BBC One's 21.3%. BBC Two was third with 7.9%, followed by Channel 4 with 6.1% (+1: 1%) and Five with 5.4%.

Elsewhere, the new episode of 24 drew 628k (3%) for Sky1 at 9pm, beating E4's latest visit to 90210, which logged 258k (1.2%).

Also at 9pm, BBC Four documentary Japan: A Story Of Love And Hate delivered 297k (1.4%).

Ratings data supplied by Attentional