Doctor Who The Magician's Apprentice has an official consolidated 7 day rating of 6.54 million viewers.
The rating issued by the Broadcasters' Audience Research Board, or BARB, includes all those who watched the programme within one week of transmission.
The final rating is slightly down on last year, where the majority of the season rated around 6.9 million viewers.
The rating puts Doctor Who at the 13th most watched programme of the week on all UK Television, and the 4th most watched programme on BBC One. The Great British Bake Off topped the charts with a consolidated audience of 12.35 million viewers, over 2 million higher than its nearest rival, ITV's Downton Abbey, which had 9.9 million viewers.
The figures do not include those who watched on the BBC iPlayer, where The Magician's Apprentice had over 1.3 million download requests in the week following transmission.