Doctor Who - The Pilot had an overnight viewing figure of 4.64 million viewers, a share of 24.8% of the total TV audience, according to unofficial viewing figures.
Saturday's top show was Britain's Got Talent on ITV which had 8.65 million watching.
Doctor Who was BBC One's second highest rated show for the evening, just behind All Round to Mrs Brown's which had 4.67 million. It just beat Pointless Celebrities which had 4.34 million watching. Casualty had 3.48 million.
Final figures, including those who timeshift, will be released next Monday, which should see Doctor Who substantially increase its audience.