French people are handing out croissants in London to persuade Britain to stay in the E.U.

LONDON — As they do nearly every hour of every day, a troop of Parisians arrived at London’s St. Pancras station on Wednesday morning off the Eurostar train from Paris’s Gare du Nord, a mere two hours and fifteen minutes to the south.

These particular travelers, however, were on a mission: “Operation Croissant.”