BBC
indicates that there is:
"What could happen next week in Parliament?
Any new law has to pass through all stages of both Houses of Parliament. This would usually take weeks, but it could be done in as little as three days this week.
However, the bill could be challenged by the government and fall at any stage. It could fail to achieve enough support from either MPs or peers in votes held in the Houses.
- Tuesday: Opposition MPs are expected to put forward legislation to stop no deal under "SO24" or Standing Order 24 - the rule that allows MPs to ask for a debate on a "specific and important matter that should have urgent consideration". This would be the bill's first reading - its formal introduction to the House.
- Wednesday: In theory, the bill would then be debated and could potentially pass through all stages of the Commons. However, the bill must pass through a series of votes and receive backing from more than half of MPs in order to pass on to the next stage.
- Thursday: If MPs passed the bill, it could then reach the House of Lords by Thursday, but consideration of the bill could spill into Monday. It will be debated and voted on. The House is not due to sit on Friday.
- Monday, 9 September: If the bill passes these hurdles it could gain Royal Assent, which formally makes it law."
https://www.bbc.co.uk/news/uk-politics-495419