Friends and former colleagues of BBC Radio 1 presenter Mike Smith have described their "heartbreak" after the 59-year-old died in hospital.
Breakfast Show alumni including Noel Edmonds, Mike Read and Simon Mayo joined others from the world of entertainment in mourning Smith's death.
Smith, who was married to fellow TV personality Sarah Greene, died in hospital on Friday from complications connected to his recent major heart surgery. The couple, who married in 1989 and were childless, lived in London.
Edmonds, a long-term friend of the couple, said in a statement: "I am totally stunned and heartbroken for Sarah and his family.
"Mike introduced me to motor racing and I introduced him to radio. He was so much more than simply a presenter. Mike was that rare individual – the consummate broadcaster in an era when professionalism, dedication and hard work were truly valued."
Mayo, who took on the Breakfast Show when Smith left in 1988, wrote on Twitter: "Shocked to hear of Mike Smith's death today. Condolences to Sarah and all his family.
"When we joined Radio 1 in 86, he was the guy who had it all. His breakfast show was a shiny, sparkly thing, a must-listen."
Fellow Breakfast Show host Read was among those to pay tribute to "affable, business-like" Smith.
The DJ said: "The news is just devastating. Sarah and Mike were a wonderful couple – it is truly horrible to hear."
Smith was a key figure in the early years of Comic Relief but largely stayed away from the limelight after a helicopter crash which injured both himself and Ms Greene in 1988.