Sounds like you won’t like their replacement on the Tardis then, also a well known UK comedian.

But companions shouldn’t be already famous? Forgetting that all of the reboot Doctors were already famous or well respected actors. Let alone Billie Piper being a very famous pop star

Catherine Tate’s Donna was my favourite of all of 9-10’s companions and Bradley Walsh as Graham was the only member of the fam I’ve been interested in (and I liked the idea of the Doctor being a woman and their companion being an older man in contrast to most Who and leading to Jack’s mistaken assumption).

The one thing that bugged me in this episode was that it took the Tardis five mins (at least) to travel to Japan for no reason except to allow for the deep and meaningful?