Geraint Davies, MP, was the fifth petitioner in the court case that has found that Boris Johnson suspending parliament is unlawful.
The case, which was heard in Scotland, was backed by a cross-party group of MPs and found that the motive for the PM proroguing Parliament was to frustrate Brexit.
Mr Davies, said: “I am the fifth petitioner in the court case to say that closing down Parliament as the clock ticks towards Brexit deadline is illegal and the Scottish have courts agreed. In short, they have ruled that prorogation is null and void. This means Parliament was never prorogued and should, therefore, continue to sit.
“I’ve been overwhelmed by Swansea constituents saying Parliament should be sitting at this crucial time in our nation’s history.
“Instead the Conservative Prime Minister Johnson has illegally shut down Parliament and spending £100 million of tax payers money on propaganda pretending a No Deal Brexit won’t harm Swansea and UK whilst hiding his Yellowhammer report that says it will. Luckily Parliament undetonated the No Deal time bomb due to blow up with medicine and food shortages. and the Scottish courts have agreed that the Prime Minister acted illegally in shutting down democracy
Mr Davies added: “What’s more is he also threatens to break the law again by not extending the 31 October deadline if he hasn’t got a Deal agreed. This is a question of whether the UK is a parliamentary democracy that obeys the rule of law. Boris Johnson must obey the law and democracy must be resumed. I’m looking forward to be back at work by the end of next week.”
The government has said it will appeal the case in the High Court, which is scheduled for next Tuesday.