The Brexit deal explained What are the key changes and what do they mean?

''Michel Barnier hailed the Brexit deal agreed between Brussels and London as a "fair and reasonable result" after days of intensive negotiations.

Both the EU and the U.K. have moved in order to come up with the compromise deal, but in truth it is London that has had to make the more radical concessions. The final deal differs in many key respects from the "final offer" put forward by Prime Minister Boris Johnson at the Conservative Party conference. Those concessions may yet prove costly in terms of winning the backing of the Democratic Unionist Party and hard-line Brexiteers in his own party..''

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