4.30pm: Pannick’s main pitch is about the power of Parliament. He tells the Supreme Court that ‘Parliament is sovereign and only Parliament can remove that which it has incorporated into domestic law’ – meaning that Brexit cannot be started by the Government without the agreement of Parliament. He boils down his argument to a series of main points, including the fact that the 2015 Referendum Act didn’t make any provision for the triggering of Article 50 – meaning that it should be down to Parliament. And that only a law passed by Parliament can revoke rights which were introduced by Britain joining the EU back in 1972.

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