There is a Batman restaurant in London, or rather there was: Savini at the Criterion on Piccadilly Circus. Savini was a haunted grey Italian restaurant that closed in 2018 and was artistically dependent on salt. It appeared in The Dark Knight,in which Batman, who is Bruce Wayne to everyone but himself (I have a theory that everyone knows Bruce Wayne is Batman, but they pretend not to because he is an orphan), owned this restaurant, in which case he should have fixed the telephone lines.