Doctor Who: Dark Water finished as the 15th most watched programme on British Television, according to figures from Barb.
The episode had an official 27.4% share of the total TV audience.
Top for the week was Strictly Come Dancing which had 10.93 million watching, once more beating ITV's Downton Abbey, which had 10.77 million viewers.
Doctor Who was the 7th highest rated programme on BBC Television.
Story updated to remove a double reference to Countryfile.