The Brexit debate returns to both Houses of Parliament today as Theresa May seeks the authority to trigger Article 50 and begin the two-year process of leaving the European Union. MPs are having to debate and vote for a second time on the government's EU Withdrawal Bill, after peers amended it. Nick Robinson discusses with Jeremy Corbyn, leader of the Labour party, about the importance of protecting EU nationals and being part of the single market. (Image: Jeremy Corbyn; credit: Getty Images)