KEY POINTS
  • The U.K. has said the Internal Market Bill, which now requires the approval of the House of Lords, will protect the integrity of the U.K.
  • European Commission President Ursula von der Leyen said the bloc had given Britain until the end of September to remove "problematic parts" of the bill, but the deadline has now lapsed and the provisions remained. 
  • The EU had previously said the proposed legislation would constitute an "extremely serious violation" of the withdrawal agreement.
A British Union flag, also known as a Union Jack, right, flies with other European Union (EU) member state flags outside the European Parliament in Brussels, Belgium, on Thursday, Jan. 30, 2020.

LONDON — European Commission President Ursula von der Leyen said Thursday it has formally notified the U.K. over its contentious plan to override the Brexit divorce deal, marking the first step in legal proceedings.   

The notification came after U.K. lawmakers approved Prime Minister Boris Johnson's Internal Market Bill earlier this week, despite some ministers admitting the legislation could lead to the country breaching international law.