UK-EU-BREXIT: House of Lords Select Committee on the Constitution
13 September 2016
See the full text:
The invoking of Article 50 (pdf): Concludes that:
"co-operation should start now. Parliament and the Government should, at this early stage, take the opportunity to establish their respective roles and how they will work together during the negotiation process. The constitutional roles of each—the Executive and the Legislature—must be respected, beginning with parliamentary involvement and assent for the invoking of Article 50."