Stephen spoke this afternoon in the Second Reading of the Government's European Union (Withdrawal Agreement) Bill.
He urged fellow MPs to oppose the Bill, pointing out two major inaccuracies in its portrayal by the Prime Minister.
Speaking after his Commons intervention, Stephen said: 'Statements made by Boris Johnson directly contradict the Agreement he has negotiated. The Prime Minister has said that there will be no new Rules of Origin checks and no border checks across the Irish Sea. In both cases, Government documents show there will be such checks. The deal will put the continued existence of the UK in its current form at risk, and will damage the UK economy. MPs who support it will have a lot of explaining to do to their constituents in the years ahead, as the impacts unfold'.