OOC: I'm thinking that you guys might want to decide how much of the constitution you want to be erm...for lack of a better word...codified...and how much you want to be a mishmash of convention, pieces of legislation, past and present royal actions, past and present parliamentary actions...history etc.
You also might wish to either flush out some sort of history (political I assume), and decide what, if anything that might be been around prior to now is in effect.
Shrug. Thats all.
Off with your heads.