The untested nature of the new IGR scheme affords 34 HL Constitution Committee (n 29). 35 Paun & Shuttleworth (n 24) and McHarg (n 24). 36 Paun & Shuttleworth (n 24). 37 See for example the account of pre-legislative exchanges between Scottish Government and UK Government lawyers given in C McCorkindale and J Hiebert, ‘Vetting Bills in the Scottish Parliament for Legislative Competence’ (2017) 21(3) Edinburgh Law Review 319. 38 HL Constitution Committee (n 29). 39 Paun & Shuttleworth (n 24). room for the devolved authorities to work with the centre to consider what an agreed process might look like, including what a political enforcement mechanism might look like.