This article considers the recent prorogation litigation, which is encompassed of two legal actions, one in England and Wales, and the other in Scotland, to challenge the Prime Minister’s ability to advise Her Majesty the Queen to use her prerogative powers to prorogue Parliament. The English and Welsh litigation in R (on the application of Miller) v The Prime Minister will be referred to as Miller (No.2) and the Scottish litigation in Cherry and others v Advocate General for Scotland will be referred to as Cherry. The decision of the Supreme Court in R (on the application of Miller) v Prime Minister and Cherry and others v Advocate General for Scotland will be referred to as Miller (No.2) and Cherry. This article like the decisions of ...