Len Goodman, a renowned ballroom champion and veteran judge on Strictly Come Dancing, is a judge on the show.
Dancing and Dancing with the Stars, died of bone cancer at the age of 78.
His agent Jackie Gill reported that Goodman died peacefully and surrounded by family.
On Saturday in Kent, England, a hospice. Goodman is survived by his spouse, son, and two grandchildren.
"Millions of people admired Len Goodman, who was a fantastic, warm entertainer.
"Felt like a member of everyone's family," said Tim Davie, director-general of the BBC, in a statement.