10) Fight Redcoats (more for the dudes).
9) Remind them how we saved them in "The War," don't be specific.
8) Everytime you see a British Person Yell "its Mr.Bean!" they think its cool.
7) Say everything in a dinner theater Shakespearean voice.
6) Ask them about the Empire.
5) Whenever they use a British Colloquialism take on a blank expression for a minute until they explain it, they love to explain.
4) Start an industrial revolution.
3) Engage in an over stylized crime or heist.
2) Take embarrassing pictures of a member of the royal family For the papers and/or blackmail.
1) Steal an Elgin Marble, for the Turks!