"Where is our open and rigorous debate about the choices being made by UK Government?" Ahead of Theresa May's speech, Professor Michael Dougan explains how the UK internal market is dependent on EU rules.

A lecture for the organisation, 'North Wales for Europe' by the European law expert Professor Michael Dougan, chaired by Professor Maria Hinfelaar, Vice-chancellor of Glyndwr University.

EU Law expert Prof Micael Dougan gives his views on the likely future relationship between the EU and the UK and responds to audience questions.