Opposition party leaders have urged Boris Johnson to put his decision to suspend Parliament to a vote or reverse it entirely.
The SNP, Labour , Lib Dems, Plaid Cymru and The Independent Group for Change have condemned the Prime Minister’s move to prorogue Parliament for almost a month.
It has been widely speculated that the move by the Tory leader is an attempt to shorten the amount of time that MPs have to try and stop a no-deal Brexit.
In a rare joint statement, the opposition leaders said: “It is our view that there is a majority in the House of Commons that does not support this prorogation, and we demand that the Prime Minister reverses this decision immediately or allows MPs to vote on whether there should be one.”
The statement continues: "We condemn the undemocratic actions of Boris Johnson following his suspension of Parliament until October 14.
"There is no mandate from the public for a damaging no-deal Brexit . The Prime Minister is shutting down Parliament with the sole aim of stopping MPs from avoiding a no-deal Brexit.
"This will be the longest prorogation in recent history, and one that comes at a critical moment in the history of our respective nations and the Brexit process.
"Voters are being deprived of the opportunity to have their representatives hold the Government to account, make any key decisions, and ensure there is a lawful basis for any action that is taken.”
Some Tory backbenchers have started working with opposition MPs to try and force Johnson not to take the UK out of the EU without a deal.
Tory MP and former chancellor Ken Clarke said he would be willing to vote against the government in a confidence vote in a desperate attempt to stop a no-deal Brexit.
Asked if he would be willing to bring down the Government, Clarke told ITV News: "If it's the only way of stopping us plunging into the disaster of a no-deal Brexit, then yes.”
The Prime Minister is facing a legal challenge from a cross-party group of around 70 MPs and peers at Scotland’s highest civil court.
They are seeking out an interim interdict from a judge which would stop the Prime Minister taking the option of suspension until a final decision has been made on the case.
A decision is due to be announced on Friday morning.
Further legal challenges against Boris Johnson’s suspension decision are also being mounted in Belfast and London.