In British English too - but possibly less offensive than in the US. Standard gag in a family friendly show would be an elderly lady asking if anyone had seen her ❤❤❤❤❤. That said I've surveyed several of my friends. All all their cat "❤❤❤❤❤" or "puss" . None use "kitty". Incidentally, "❤❤❤❤❤" is the older word.