Doctor Who, Praxeus, had an official rating of 5.22 million viewers, according to figures released by the Broadcasting Research Audience Board, BARB.
The ratings make the episode the 12th most watched on BBC Television for the week and the 28th across all television. It had a 23.5% share of the total TV audience.
Doctor Who did just beat the opposition on ITV, Dancing On Ice, which had 5.06 million viewers.
In detail 5.09 million watched the episode on a conventional TV set. However the BARB 4-Screen Dashboard shows that an additional 63,000 watched on their PC, 38,000 watched on a Tablet device and 30,000 watched on a smartphone.
Top for the week was White House Farm on ITV with 8.27 million watching.
Doctor Who had an Appreciation Index score of 78