The big stushie comes when the Westminster government (which is not popular - or indeed elected - in Scotland) tries to interfere with the Scotland Act which set up parliament in its albeit limited form in 1999. That Act was Westminster based, and a Westminster based referendum was needed to ensure Scots approved it - which we did, overwhelmingly. Surely any interference with the Act, which enshrines ECHR and other EU laws in its make up, would require another Westminster led devolution referendum? Holyrood - and not only SNP - are adamantly against Westminster changing legislation without the Scots parliament's consent, and, as Labour, what's left of the Lib Dems, the Greens, as well as SNP are opposed to Westminster changing legislation without Holyrood's approval, get the popcorn ready........