A timeline of key events related to Britain’s decision to leave the European Union:

British Prime Minister Boris Johnson has underlined the post-Brexit trade negotiations between Britain and the European Union (EU) were now "in a serious situation," a Downing Street spokesperson said Thursday.

Britain’s foreign minister said Sunday there is only about a week left for the U.K. and the European Union to strike a post-Brexit trade deal, with fishing rights the major obstacle to an agreement.

Biarritz, Aug 26 (AP/UNB) — British Prime Minister Boris Johnson talked trade with his Australian counterpart at the Group of Seven summit in France as he sought to position his nation for a post-Brexit world.