Lizo Mzimba of the BBC has just reported on twitter…

Something of a drop for Doctor Who last night which got 5.1 million, down from 5.7 million last wk. Altho consolidateds including catch up on all platforms will tell more complete story etc. The X Factor final was 5.3m (5.5m including ITV+1) up from 5.0 m (5.2m incl +1) last year

https://twitter.com/lizo_mzimba/status/1069527418220789760