A Scottish court has delayed a decision on whether to sign a letter requesting a Brexit extension if the prime minister refuses to do so.
Campaigners asked the judges to agree to enforce legislation passed by MPs aimed at preventing a no-deal exit.
This would require Boris Johnson to ask European leaders for another delay if no deal is agreed by 19 October.
Judges at the Court of Session said they could not rule on the matter until the political debate has “played out”.
The court will sit again on 21 October to assess how circumstances have changed by then.