A decision is expected “early next week” on whether Boris Johnson’s prorogation of Parliament was lawful.
It came as the three-day Supreme Court hearing into the hugely controversial measure concluded on Thursday.
Lady Hale, president of the Supreme Court, said in her closing remarks: “I must repeat that this case is not about when and on what terms the United Kingdom leaves the European Union.
“The result of this case will not determine that. We are solely concerned with the lawfulness of the Prime Minister’s decision to advise Her Majesty to prorogue Parliament on the dates in question.
“As we have heard, it is not a simple question and we will now carefully consider all the arguments that have been presented to us.”
She went on: “We hope to be able to publish our decision early next week.”
Mr Johnson has been accused of proroguing Parliament until mid-October in order to prevent MPs putting a stop to a no-deal Brexit. But the Prime Minister has insisted suspending Parliament was necessary in order to prepare a domestic legislative agenda.
This page is being updated.