European Court ‘Could Veto’ Brexit Deal

A man carries a European Union flag outside the Supreme Court in Parliament Square ahead of the ruling on whether Parliament have the power to begin the Brexit process in London on Jan. 24, 2017. Leon Neal/Getty Images

The European Court of Justice has the power to veto the deal currently being negotiated between the UK and the EU, an expert warned on Wednesday.

Sir Konrad Schiemann was the British representative at the European Court of Justice (ECJ) until 2012. He told a parliamentary Brexit committee that even if both sides agree to a deal, it is subject to a legal challenge by the European court.