UK Prime Minister Boris Johnson was heckled with a demand to "get back to Parliament" during a speech in the north of England.
He was speaking at the Convention of the North conference in Rotherham in Yorkshire about his commitment to boosting economic development in the north.
But the speech was interrupted by an audience member who asked why he was not with MPs in parliament to "sort out the mess [he] created".
It follows a Scottish court ruling on Wednesday that his suspension of parliament until October 14 was unlawful.
Taking questions from journalists Johnson said he "would not be deterred" from making sure the UK left the EU on October 31.
He added that parliament had only lost around four days sitting time as it typically did not sit in late September and early October as the major UK political parties go to their annual political conferences.
It comes ahead of next week's talks with European Commission President Jean-Claude Juncker, which are expected to include Brexit.
Johnson said he was "cautiously optimistic" he would get a new Brexit deal with the EU but "we will see where we get" following the meeting.
He said they had "a rough shape of a deal" in place.