Labour won 412 seats in Thursday’s elections to the House of Commons, giving it a comfortable majority and its second-best result ever.

Following the victory, Starmer became the 58th prime minister in the country's history.

“Congratulations on your truly great victory,” Tusk wrote on social media.

“I deeply believe that together we will do a lot of good for the U.K., for Poland, for Europe and for the free world,” he added.

Dear Prime Minister @Keir_Starmer. Congratulations on your truly great victory. I deeply believe that together we will do a lot of good for the UK, for Poland, for Europe and for the free world.

— Donald Tusk (@donaldtusk) July 5, 2024

At noon London time, Starmer was granted an audience with King Charles III, who appointed him, as leader of the victorious party, to form the government.

NEW: Keir Starmer is Prime Minister.

He was appointed by King Charles III minutes ago.

He becomes only the seventh Labour leader to become PM. Only the fourth to be elected by the public as leader of a majority Labour government.

An historic achievement. pic.twitter.com/8mKvP1pYFl

— Lewis Goodall (@lewis_goodall) July 5, 2024

The Labour Party had remained in opposition since losing the May 2010 general election.

However, Labour's victory was tempered by a bitter reality—voter turnout was just 60%, the lowest since 2001.