A Constitutional Question

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budgie_uk posted an opinion piece on his new Wordpress blog suggesting that it's past time that the UK wrote itself a Constitution.

Which got me thinking about our own set-up.

If memory serves, ours here in Canada is spread across a couple of documents, classic UK-style:

1) The British North America Act of 1867
2) The Constitution Act of 1982, which includes...
3) ...the Charter of Rights and Freedoms.

Am I wrong in suspecting that there's other components to the mix that I'm forgetting?