Comedian Andy Smart has died "unexpectedly" at the age of 63.
His daughter, Grace, confirmed the heartbreaking news on her social media.
She wrote: "I’m very sorry to let you all know that Dad passed away unexpectedly last night.
"He had so many friends and such a great life. Raise a glass for him."
Friends Eddie Izzard and Dara O'Briain were among the people paying tribute to the "force for joy".
Eddie posted: "Very sorry to hear this Grace. Andy was a very funny man and a great improviser. His talent will be missed."
"That is such terrible news, I’m so sorry to hear that," Dara said.
"Condolences to Andy’s family and friends; he was such a force for joy, and will be sorely missed."
Fellow comic Milton Jones added: "Upset to hear this. Few seem to manage to enjoy life both on and off stage as much as he did.
"Sorry to his closest. I’ll miss his grin."
Rufus Hound wrote: "‘Absolutely heartbroken.
"There will be others that will speak of his talent, but simply one of the great MEN died. A lust for revelry in all forms, there’s less light today. Will be drinking to him tonight. What a lad."
The comedian is known for performing with improv group The Comedy Store Players.
He always performed at The Comedy Store in London twice a week up until his death.
Speaking about becoming a Comedy Store Player, he previously said: "I was only a guest up until '96, a full player from then. I was lucky because there were quite a few people they could have chosen.
"...I'm very fortunate, really."
Andy's comedy career started in the 80s. He was part of a double act called The Vicious Boys with Angelo Abedi.
They even won the 1984 Time Out Street Entertainer Award.