The Series 7 opener, Asylum of the Daleks had an overnight audience of 6.4 million viewers with a 29.3% share of the total TV audience.
Figures show that the audience was steady throughout the episode and 2.5 million viewers were inherited from Total Wipeout.
Doctor Who won the time-slot, beating ITV's Red or Black?, which had 3.5 million viewers and came in at 6th for the day.
Winner of the day was The X Factor, which had an audience of 8.6 million and a 36.8% share of the audience which makes Doctor Who second in the charts for the day.
With one day to come, Doctor Who is currently 10th for the week.
Overnight figures are an estimate of those who watched the programme live, or before 2am the following day.
Final viewing figures figures, which will be available early next week, will include those who watch the programme within a week.