101 Dalmatians/The Sword in the Stone/Mary Poppins/The Jungle Book/Bedknobs and Broomsticks/The Aristocats/Robin Hood. All their major movies were set there or in British controlled territories. I'm sure there's probably some that I'm missing as well.
Edit: Aristocats takes place in France apparently, but I'm pretty sure all of the characters seemed British.
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"Ahem! There is *sand* on my *boot*!"--Kefka
Black Turtle beat me, Yesmar in the Fall 2010 Guru Contest!