"The Magician's Apprentice" had an Audience Appreciation Index (AI) score of 84. Series 8 achieved an average score of 83.3.
The Audience Appreciation Index (AI) is a score out of 100 which is used as an indicator of the public’s appreciation for a show. Over 90 is considered exceptional, 85 or over is excellent, 60 or less is poor, and less than 55 is very poor.
52% of those responding strongly agreed that the show was "fresh and new".
Figures also show that an extra 1.1 million watched "The Magician's Apprentice" on catch-up on Sunday and it remains the #1 show currently on BBC iplayer.