The UK Supreme Court finishes hearing arguments on the lawfulness of Prime Minister Boris Johnson's prorogation of Parliament. The court states it expects to rule next week. It is jointly considering appeals against two rulings. One, made by the High Court in London under English law, ruled prorogation was an entirely political decision over which courts had no jurisdiction. The other, made by the Court of Session in Edinburgh under Scots law, ruled Johnson acted unlawfully and the prorogation was a nullity that must be reversed.
Sources: BBC News