The Supreme Court hearing into whether the suspension of Parliament was lawful sits for the final time today. This morning, representatives from Scotland, Wales and Northern Ireland will be heard. Then shortly after midday, former Conservative Prime Minister John Major is expected to make his intervention.
In a written submission to the court, Sir John – who will be represented by his barrister – has warned that if the judges do not rule against the Government, nothing could prevent a future Prime Minister from using prorogation "in any circumstances" – including to scrap the Army if they wished to.
In his speech, the Tory grandee is also expected to accuse current Prime Minister Boris Johnson of breaking the law and will compare him to a dishonest estate agent whose argument for prorogation "makes no sense".
The justices will be told: “It could hardly be suggested that the duties of the Prime Minister to the monarch are less than those of an estate agent to a homeowner.
“Accordingly, if the court is satisfied that the Prime Minister's decision was materially influenced by something other than the stated justification, that decision must be unlawful.”
David Starkey accused John Major of being (Image: EXPRESS.CO.UK/GETTY)
Conservative Prime Minister John Major (Image: GETTY)
The Supreme Court is hearing appeals on two different rulings from courts in England and Scotland over the parliamentary shutdown.
The High Court in London said the issue is not a matter for the courts – but the Court of Session in Edinburgh found that the Prime Minister’s advice to the Queen to prorogue Parliament was unlawful, following a case brought by 75 MPs.
The judges are expected to deliver their ruling next week.
In an exclusive interview with Express.co.uk, famed constitutional historian David Starkey accused Sir John of being “ridiculous”, as the Conservative politician is one of the few Prime Ministers who have actually prorogued Parliament in a "contemptible" way.
Mr Starkey claimed that prorogation was of course an “outrageous” political tactic, but argued that all political tactics tend to be.
He said: “I think the Scottish court ruling that Boris he had broken the law is a piece of typically presbyterian piety.
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The Supreme Court (Image: GETTY)
Boris Johnson has been accused of proroguing Parliament unlawfully (Image: GETTY)
“That verdict to the enlighten high court was given by the most