//So presumably you’d be happy for GB’s government and Parliament not to sit either?//
No I wouldn't. But I don't hold with devolved government of any kind, least of all one which bestows quasi-national status on what are essentially simply provinces of the UK. Before you ask, I do not support local government either. There is simply no need for it. All it does is to generate division and rancour. How many times do you hear of a local government blaming their woes on national government?
Local services can simply be administered by an executive acting under powers from central government. Since 80% of local government income is provided by central government it would make far more sense. An excellent example can be seen in London. Mrs Thatcher went to great lengths to abolish the totally superfluous Greater London Council and its bedmate the Inner London Education Authority. The GLC was put out of the electorate's misery in 1986 and the ILEA in 1990. Their functions were subsumed into the London Boroughs and central government, though it would have been better if they had all been resolved to the centre. London functioned perfectly well until 2000 when the Labour administration re-introduced the GLC by subterfuge under the guise of an "elected mayor". Now it has a layer of superfluous "government" again which simply absorbs huge sums of London taxpayers' dosh.
The UK needs fewer layers of government and the devolved assemblies (or whatever they call themselves) should be first for the chop.