Europe

AP Interview: London mayor to fight hard to avert Brexit

FILE - In this file photo dated Saturday, May 7, 2016, Sadiq Khan, speaks on the podium at City Hall in London, Saturday, May 7, 2016.  London’s mayor, Khan on Sunday June 12, 2016, pledged to fight until the moment the polls close to persuade Britons to vote to remain inside the European Union bloc, in the upcoming June 23 referendum.(AP Photo/Kirsty Wigglesworth, FILE)

FILE - In this file photo dated Saturday, May 7, 2016, Sadiq Khan, speaks on the podium at City Hall in London, Saturday, May 7, 2016. London’s mayor, Khan on Sunday June 12, 2016, pledged to fight until the moment the polls close to persuade Britons to vote to remain inside the European Union bloc, in the upcoming June 23 referendum.(AP Photo/Kirsty Wigglesworth, FILE)  (The Associated Press)

London's mayor is pledging to campaign hard to persuade British citizens to vote to remain in the European Union in a June 23 referendum.

Sadiq Khan told The Associated Press on Sunday that leaders need to to go 'door to door, street to street, city to city,' to persuade voters in a contest seen as close.

Speaking on the sidelines of Queen Elizabeth II's birthday celebrations, Khan offered an impassioned appeal to political leaders to put aside differences that have diluted the message of campaigners who want the country to remain in the EU.

"If we believe that the European Union is important for our way of life, we've got to campaign together," he said.

Khan, of the Labour Party, has campaigned with Prime Minister David Cameron, a conservative.