[Sephiroth]

Originally Posted by jfman

Once again a failure to understand what “enshrined in law” actually means.

It’s entirely democratic that everyone uses any approach (within civil and criminal law, we used to think this was a given until the Leave campaign) to justify their cause, and indeed bring it forward at every general election they wish.

Please don't unjustifiably insult me. For this case, "Enshrined in law" means, in ordinary language, that statute states the date of leaving the EU. For example reported in:
https://www.bbc.co.uk/news/uk-politics-44623619

Parliament could repeal the EU Withdrawal Act, though I'm not sure of the mechanism other than specific primary legislation (rather than an amendment to a motion).