Lord Carloway
"Since such scrutiny is a central pillar of the good governance principle which is enshrined in the constitution, the decision cannot be seen as a matter of high policy or politics. It is one which attempts to undermine that pillar. As such, if demonstrated to be
true, it would be unlawful. This is not because of the terms of the Claim of Right 1689 or of any speciality of Scots constitutional law, it follows from the application of the common law, informed by applying “the principles of democracy and the rule of law” (Moohan v Lord
Advocate 2015 SC (UKSC) 1, Lord Hodge at para [35]). The terms of the Claim of Right are not breached simply because Parliament does not sit for a month or so. Parliament has,
throughout the year, been allowed to sit"
Lord Brady
"Parliament the master of its own proceedings
[92] Clearly Parliament is the master of its own proceedings but, as I would see it, what the petitioners seek to achieve is to allow it to act as such.
No breach of the Claim of Right Act 1689
[93] As previously touched on, I would agree with the Lord Ordinary on this point."
Lord Drummond Young
The effect of the prorogation under
consideration, in particular its length, is that proper Parliamentary scrutiny is rendered all but impossible. As I have noted, I consider that the inference must inevitably be drawn, on a strictly objective basis, that that was the purpose of the prorogation. In my opinion that is not a proper purpose for proroguing Parliament. I accordingly conclude that the decision to
prorogue contained in the Order in Council of 28 August 2019 was not a proper exercise of
the prerogative power. It follows that the prorogation was ultra vires. In my opinion the
court should pronounce a declarator to that effect."
He also refers to the English equivalent of the Claim of Rights, the Bill of Rights.