Are we talking about phrases that are different between American English and British English? I'm American... but we would also say "The Lion, the Witch and the Wardrobe" because that is the proper name, we all know it to be British, and we know what a wardrobe is! On the other hand, we'd say "Watch your step" instead of "Mind the gap"... and the movie that is titled "Harry Potter and the Philosopher's Stone" in the UK is called "Harry Potter and the Sorcerer's Stone" over here. Did the miss the point of your question? Maybe you were talking about something else, otherwise you would have put your question in the Phrases & Sayings category. Hmmm....