I grew up in the states with a close friend whose parents are both from the UK and she's the only person I've known to say "I beg your pardon" with regularity. Is that a British/UK English thing too? I never hear/read it used otherwise but it seems more succinct and "proper" to me.

Mentioning it because I'm actually slightly surprised to see the "sorry, what did you say" usage here and in the article because it seems so pedestrian