A Scottish judge is being asked to consider whether Boris Johnson could be jailed if he takes the UK out of the EU without a deal.
A legal challenge is to be heard at the Court of Session about whether the prime minister could be forced to delay Brexit if no exit deal is agreed.
However Mr Johnson has said he would rather be “dead in a ditch” than ask European leaders for another extension.
The court case seeks to establish what might happen if he refuses to act.
This could even include the court effectively signing a letter to European leaders on behalf of Mr Johnson, asking for a fresh extension.
The UK government has insisted it is focused on sealing a deal with the EU to ensure the