Screen stars on both sides of the Atlantic paid tribute to Philip Seymour Hoffman tonight.
Steve Coogan was among the celebrities left shocked by the news on the red carpet at the London Critics' Circle Film Awards in central London.
"He did some tremendous work. Everything he was in he raised the quality of his film just by his presence," he said.
"People have different opinions about actors but you wouldn't find anybody who would have a bad word to say about any of his performances, they were all incredibly nuanced."
He added: "There are actors and there are movie stars and sometimes they're both but he was an actor first and a movie star second."
Skyfall actress Naomie Harris said: "That's a huge loss for everyone.
"He was an extraordinary and intelligent man, so it's incredibly sad, and it makes the evening all a bit more sombre now, having heard."
Actress Mia Farrow wrote on Twitter: "OH NO!!!!! Philip Seymour Hoffman has died. A truly kind, wonderful man and one of our greatest actors - ever."
She added: "Rest in peace Philip Seymour Hoffman. We who marvelled at each of your performances are grateful and very very sad."
Comedian and actor Ricky Gervais posted: "Such shocking & sad news. RIP Philip Seymour Hoffman. One of the greatest actors of a generation and a sweet, funny & humble man."
US actress Whoopi Goldberg wrote: "A truly great actor... Gone.. I hope someone says hey whoop it's a hoax.. R.I.P."
A spokesman for the British Academy of Film and Television Arts said: "We're shocked and deeply saddened to learn that Philip Seymour Hoffman has died."
Comedian and actor Steve Martin paid tribute by praising Seymour Hoffman's 2012 Broadway performance in Arthur Miller's Death of a Salesman.
He said: "Shocked to hear of Phillip Seymour Hoffman's death. If you missed him as Willy Loman, you missed a Willy Loman for all time."
Hollywood star Jim Carrey said: "Dear Philip, a beautiful beautiful soul. For the most sensitive among us the noise can be too much. Bless your heart."
Pop band Duran Duran used their official account to say: "Philip Seymour Hoffman, you brought a lot of joy to a lot of people".
R&B star and actor Justin Timberlake said he was "devastated" by the news. "What an amazingly gifted actor. RIP," he tweeted.
Actor and director Gary Oldman, who was at the London Critics' Circle Film Awards to receive an award for excellence in film, said that Seymour Hoffman was "enormously, hugely talented".
The 55-year-old said his heart went out to the family and described the shock at the awards when the bad news was announced, adding that there was an "audible gasp".
"He had that little bit of danger to him and vulnerability to him all those qualities that I think make somebody watchable and very special," Oldman told Sky News.
"Actually, he was on a list of mine as an actor to work with and hoped to be directing, he was very much on my list.
"Drugs will do it to you though, it's that. It doesn't discriminate."