Singers Sam Smith, Emma Bunton and Sophie Ellis-Bextor have led tributes to former One Direction choreographer Paul Roberts following his death aged 52. In a comment on the post, Unholy singer Smith said: “This is heartbreaking. My thoughts and heart is with all of Paul’s family and friends at this hard time. Thinking of you @thephilgriffin sending love to you and all his family.”Roberts spent five years with One Direction as the group’s staging director, designing their show tracks for works in film, stadium and television. “His departure, much like his life, was filled with grace.”One Direction member Louis Tomlinson’s sister Lottie also posted a broken heart and a teary emoji in reply to the post.