UK leader Theresa May addresses Parliament as official Brexit negotiations begin

U.K. Prime Minister Theresa May took questions from Parliament Wednesday and addressed the House regarding the triggering of Article 50, the clause in the Lisbon Treaty which began the formal process of the U.K. exiting the European Union.

CNBC has all you need to know about Article 50 and the Brexit process as well as a round up of how the U.K. media is covering the historic event.

A handwritten letter notifying the EU of the U.K.'s intention to leave was delivered to Donald Tusk, the president of the European Council, by Tim Barrow, the U.K.'s ambassador to the EU, at 12:20 p.m. London time.