Dr Alan Renwick (UCL Constitution Unit), Professor Piet Eeckhout (UCL Laws) and Professor Robert Hazell (UCL Constitution Unit) discuss the implications of the UK Supreme Court ruling that Brexit must be put before Parliament.
Watch: BBC World Service 'Newshour',
More: BBC Radio London 'Petrie Hosken' (from 2 hrs 50 mins 10 secs),
Yahoo! News,
Deutsche Welle
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