Radio 4 - World at One, 29 February 2016: Professor Catherine Barnard

The segment of the BBC Radio 4 World at One programme broadcast on 29 February 2016 featuring Professor Catherine Barnard discussing the possibility of Great Britain invoking Article 50 of the Lisbon Treaty. The complete programme and further information is available at http://www.bbc.co.uk/programmes/b071skpk Provided courtesy of the BBC.