Nikolaj Coster-Waldau, John Bradley, and Pedro Pascal have paid tribute to the late Dame Diana Rigg. The veteran actress - who was best known for playing Emma Peel in 'The Avengers' and more recently as Lady Olenna Tyrell in 'Game of Thrones' - passed away "peacefully" at the age of 82 on Thursday (09.09.20) morning after a secret battle with cancer.