Can we withdraw Article 50 once we trigger it? Probably (but it's complicated)

Camino Mortera-Martinez, a research fellow at the Centre for European Reform, emphasises that the debate is not purely legal, it is "a combination of politics and the law". So while the article in itself is probably revocable, "the Supreme Court interpretation is likely to be that Article 50 is non-revocable, and therefore any case for revocability is going to be a lot harder to make". But this isn't a British legal matter. "The question of whether Article 50 is revocable is European Union law and cannot be decided by the national courts, it's a question for the European Court of Justice," she adds. "But it is unlikely to be asked to pass judgement because the two parties are agreed."