LONDON: American singer Katy Perry has secured her fourth number one in the British singles chart with her latest release “Roar”, sales figures showed on Sunday. Already a number one hit in the United States and around the world, the song knocked “Burn” by English singer-songwriter Ellie Goulding off the top spot in its debut week. Perry sold 179,500 copies in the last week, making it the third fastest selling single of the year, according to the Official Charts Company, which compiles the weekly list. “I love the UK,” Perry said. “The UK is so ahead of the zeitgeist. The UK is where a lot of music trends start.”–Reuters