[arethuza]

It doesn't have a codified constitution in the US sense but it does have a constitution:

https://en.wikipedia.org/wiki/Constitution_of_the_United_Kin...

Edit: I would certainly agree that having constitution in this form isn't a great idea...

[simonh]

Frankly, the US system isn't exactly a resounding vindication of written constitutions either. Arguably the UK system has displayed considerably greater flexibility. For example the US president is still basically an elected George III.

[bemusedthrow75]

A written constitution doesn't really seem to work out better, though, does it?