The 60-minute programme at 9pm looking at primordial dwarfs, produced by Jane Treays, managed to hold an audience of 4.2 million in the final half-an-hour. This figure was well above the channel's slot average for last year of 2.8 million (11.4%).
The programme gave the broadcaster a comfortable lead over its nearest rivals. Five's The Boy Who Sees Without Eyes, part of its Extraordinary Peoplestrand, managed 1.4 million (5.6%) in the same slot. BBC2's drama documentary Nuclear Secretsgained 1.1 million (4.4%).
Despite BBC2's strong performance, the 9pm slot was dominated by BBC1 thanks to the conclusion of the Mask of Sanitystoryline in Waking the Dead. The 60-minute drama starring Trevor Eve and Sue Johnston impressed 6.7 million (26.7%), exactly the same audience volume as Sunday's (28 January) show in the same slot.
ITV1's Trial and Retributionsettled for second place with 5.6 million (23.3%). The 90-minute show managed to increase its audience by nearly a million viewers compared to Sunday's show.
The Tonightprogramme once again had the upper hand in the latest skirmish between the current affairs strands. Sick in the Sungot 5m (20.4%) at 8pm. Panorama's Secrets of the Dugs Trialsat 8.30pm drew 3.7 million (14.6%) to BBC1 for 30-minutes. C4's Iraq's Death Squads, part of Dispatches, had 866,000 (3.4%).
ITV1's Tonightprogramme was given a leg up in the ratings thanks to it being flanked by Coronation Streeton either side. The 7.30pm episode of the soap pulled in 11.3 million (47.7%) while 11.1 million (43.7%) watched at 8.30pm.
BBC1's EastEndersat 8pm won over 10.3 million (41.5%).
Outside of peaktime C4's teatime show Richard and Judystarted off its new series on a high with its largest ever audience in what is a highly competitive slot. The 60-minute chat show at 5pm averaged 2.9 million (19.1%).
The previous best performance for the show had been 2.7 million (19.4%) in February last year.
A whisker behind C4 was BBC2's popular quiz Weakest Linkat 5.15pm on 2.8 million (17.3%) while ITV1's season of Inspector Morserepeats from 4pm had 2 million (14.7%). BBC1's long running Australian soap Neighboursfound a sizeable 3 million (17.2%).
All hours shares for Monday 29 January 2007: BBC1 - 22.9%, ITV1 - 23.6%, C4 - 10.2%, BBC2 - 7.7%, Five - 5.5%, multichannel - 30%.
Peaktime ( 6pm to 10.30pm ) shares: ITV1 - 29.3%, BBC1 - 24.6%, C4 - 9.1%, BBC2 - 7.7%, Five - 4.9%, multichannel - 24.3%.