Brexit Ep 2: Article 50 - what next?

Now that Article 50 has been triggered what does the negotiation process involve, who are the key players and where are the EU's red lines? Sarah Collen of the NHS European Office spoke to Fabian Zuleeg, Chief Executive of the European Policy Centre to find out. And with Britain's only physical border with Europe in Northern Ireland, Kate Ling reports on the potential impact of Brexit on organisations, staff and patients both North and South of the border.