One of the UK's top QCs, expert in public law, has just indicated on social media, as Lord Pannick summarises on facts, law and remedy, that the UK Supreme Court will, in her view, accept the arguments of the claimants' (i.e Miller, Cherry et al).
A formidable spectrum of argument on behalf of the claimants, including from interveners, may have been helped, particularly, by Sir Edward Garnier (QC for Sir John Major) distinguishing prorogation as being justiciable ie amenable to judicial review.