https://creativecommons.org/licenses/by-nc/4.0/ This is a pre-copyedited, author-produced version of an article accepted for publication in Public Law following peer review. The definitive published version [R.B. Taylor, ‘The Contested Constitution: An Analysis of the Competing Models of British Constitutionalism’ [2018] P.L. 500] is available online on Westlaw UK or from Thomson Reuters DocDel service .