K-pop viral phenomenon Psy's hit "Gangnam Style" topped the formal British music chart on Sunday (local time) for the first time for a Korean singer, a company in charge of compiling the chart said. According to the Official Chart Company, Psy jumped to No. 1 on the British Official Singles Chart with his popular track and famous horse-riding dance, after the song debuted on the chart six weeks ago. "He's done it! Gangnam Style fever has swept the globe this month and today officially conquers the U.K., galloping all the way to Number 1 on the Official Singles Chart," the company said on its Web site. Sales of the tune soared by 73 percent over the course of the week to defeat last week's top single "Hall of Fame" by The Script, the company said.