Comedian Sean Lock, best known for panel shows 8 Out Of 10 Cats and 8 Out Of 10 Cats Does Countdown, has died aged 58, his agent told the PA news agency.
Lock, also known for the sitcom 15 Storeys High, died from cancer.
A statement from his agent Off The Kerb Productions said: "It is with great sadness that we have to announce the death of Sean Lock.
"He died at home from cancer, surrounded by his family."
His friend comedian Lee Mack said: "I've known this day was coming for some time, but it's no less heart-breaking.
"A true original both in comedy and life. I will miss him so much."