A peak of 10.6 million viewers tuned in to watch the return of Cheryl Fernandez-Versini to the X Factor, exactly double the peak audience of Doctor Who.

The BBC science fiction show, which overlapped with the X Factor for 15 minutes, had a peak audience of 5.3 million viewers.

The figure is down on the peak of 7.3 million who tuned in last weekend to see Peter Capaldi's debut as the Doctor in a feature-length opening episode of the series.