Well on this we disagree. The UK has left the EU. A special deal is in place with a small fraction of the UK, located on primarily EU territory, for people whose birthright is now EU citizenship. There is a transitional arrangement in place for the remainder of the UK,which terminates next December. That transitional arrangement could be extended by the UK requesting within 4 months another transitional extension.Disagree, the House of Commons have repeatedly said the deal is not leaving, and the "all" is hardly true when N.I is left on the EU side of the border. And remember that in the Great Repeal Bill, parliament has written all existing EU law into UK law.
Our so called departure will not be completed until the trade negotiations are, so all further concessions then will add to the failures to separate within the Withdrawal Agreement and Great Repeal Bill.
We already know that the EU will have to largely retain its fishing rights in our waters, although our fishermen don't yet.
By the time its all over, the concept that we have left will just be a bad joke.
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What the HoC states and whatever laws they pass are now as far as the EU is concerned irrelevant. Your Great Repeal Bill etc is just for UK consumption.
The only game in town is the New Treaty arrangements that the UK and EU negotiate.
I wish it were not so, but wishing don't make it so.