By Dave West, Media Correspondent

Michael Portillo's documentary about Margaret Thatcher and the Tories gave BBC Four an audience well above average last night.

Some 425,000 people, 2.17% of the multichannel audience, tuned in from 9-10pm for Portillo on Thatcher: the Lady's Not for Spurning.

It outperformed the slot average from last year of 199,000 (1.07%), and attracted a good proportion of the coveted ABC1 demographic.

BBC Four led the other digitals from 9pm except BBC Three and ITV2.

BBC Three scored a surprise hit with a re-run of Kizz: Mum at 14, only aired to replace Dis/Connected.

The new drama was pulled in the light of the Bridgend suicides because it is about a teen who takes her own life. Kizz attracted 761,000 (3.70%) - only just less than when it initially aired on the channel on January 21.

On ITV2 515,000 (2.49%) saw Die Hard despite it also having aired the day before. Elsewhere, 358,000 (1.74%) watched Numb3rs on Five US.

The leaders at 10pm were Skins on E4, with 679,000 (4.42%) viewers, and BBC Three's EastEnders re-run on 616,000 (3.48%).

On the terrestrials, MasterChef earned the largest audience of its run so far with 4.3m, or 17% of the audience, from 8.30-9pm on BBC Two.

It was only beaten in the slot by Coronation Street, which took 9.8m (39%) for ITV1.

A Panorama about torture by the British armed forces took 2m (8%), while 1.3m (5%) tuned in for Dispatches: Checking-in to Airport Chaos on Channel 4.

Fifth Gear on Five drew 1.1m (4%) in the hour from 8pm.

http://www.digitalspy.co.uk/tv/a90258/thatcher-doc-turns-viewers-to-bbc4.html