Lady Hale, President of the UK Supreme Court, said in her ruling this morning that the prorogation came about in “exceptional circumstances.”
Parliament “has a right to a voice” as to how a rise in its sitting comes about, she added.
She said the effect on democracy of the prorogation was “extreme,” and that no evidence showed why such a long suspension was necessary.
Boris Johnson’s advice to the Queen was “unlawful, void and has no effect,” and so is the prorogation, she said.
“Parliament has not been prorogued,” she added -- a unanimous judgement by all 11 judges.