The Prime Minister and the Cabinet are clear that it is the United Kingdom's Government's decision on when to trigger Article 50, and I fully support the Government's position.

Whilst I was disappointed by the High Court Judgement, I respect the judicial process and it is through this process that the Government will appeal to the Supreme Court. The country voted to leave the European Union in a referendum approved by Act of Parliament and the Government is determined to respect the result of the referendum.  Furthermore, it was made very clear in the Second Reading of the 2015 European Union Referendum Act that the Government would act upon the referendum decision.

Parliament will of course have a say on withdrawal, not least through the Great Repeal Bill, which will be introduced in the next Parliamentary session, will remove the 1972 European Communities Act from the statute book. This means that the legislation which gives direct effect to all EU law in Britain, will no longer apply from the date upon which the UK formally leave the EU. The existing body of EU law will be converted to UK law wherever practical and Parliament will be free to amend, repeal and improve any law that it chooses.

You may also be interested to know that constitutionally the Executive has the power to make and unmake treaties.  Since Article 50 is part of the Lisbon Treaty, the Government is the branch of the legislature with the constitutional right to trigger our withdrawal from the EU.