Judges in the Supreme Court have ruled that Boris Johnson broke the law when he decided to suspend Parliament.
The Speaker of the House of Commons John Bercow says he's recalling MPs to the House of Commons tomorrow morning.
The SNP's Nicola Sturgeon and Lib Dem leader Jo Swinson are among MPs those who've called for the Prime Minister to resign.
Chesterfield MP Toby Perkins thinks Boris Johnson's position is now untenable: "It's a quite appalling set of circumstances that we should have a Prime Minister that was apparently willing to break the law in order to try and get his way and overturn the will of parliament.
"I think the leave vote originally back in 2016 was because people wanted British people making British laws and instead we've got a government which seems willing to overlook the law.
"I would expect the Prime Minister to resign. Whether this Prime Minister under these circumstances having apparently lied to the queen is going to resign, we shall see in the next 24 hours or so.
"What people need to remember today is that this is not a political decision by the court, it was simply an interpretation of the law."
Peak FM has also contacted the office of North East Derbyshire MP, Lee Rowley for comment.
We'll also hear from the Liberal Democrats' High Peak spokesperson Guy Kiddey on the issue in the near future.