Britain and the European Union have agreed to a landmark deal aimed at “resetting” their post-Brexit relationship, easing restrictions on travel and work for hundreds of millions of people on the continent.

Three achievements are likely: a security pact, a declaration on global issues, and a “common understanding” of future topics to be negotiated.

Britain agreed the most significant reset of defence and trade ties with the European Union since Brexit after Donald Trump's upending of the global order pushed the two sides to move on from their acrimonious divorce.