John Bradley, who starred in Game Of Thrones alongside Diana, was among the first to pay tribute to her after news of her death broke.
Writing on Twitter, John said: “Diana Rigg was just wonderful. But you all knew that already. Everybody did. Very sad news.”
Diana Rigg was just wonderful. But you all knew that already. Everybody did. Very sad news. #dianarigg— John Bradley (@johnbradleywest) September 10, 2020
The hit drama’s official Twitter account also put out a tweet remembering Diana, who played Olenna Tyrell between 2013 and 2017.
Be a dragon.— Game of Thrones (@GameOfThrones) September 10, 2020
The realm will always remember Diana Rigg.
Diana’s former James Bond co-star George Lazenby remembered working with her on 1969′s On Her Majesty’s Secret Service, in which she played Bond’s wife Tracy Di Vicenzo.
“I’m so sad to hear of the death of Diana Rigg. She undoubtedly raised my acting game when we made On Her Majesty’s Secret Service together,” George wrote.
“We had fun together on the set of the movie in Switzerland and Portugal. Her depth of experience really helped me. We were good friends on set.
“The death of Contessa Teresa di Vincenzo Draco created a memorable cinema moment over 50 years ago. As my new bride, Tracy Bond, I wept for her loss. Now, upon hearing of Dame Diana’s death, I weep again.”
James Bond producers Michael G Wilson and Barbara Broccoli added that they were “very sad to hear of the passing of Dame Diana Rigg”, saying their “love and thoughts are with her family and friends at this sad time”.
"We are very sad to hear of the passing of Dame Diana Rigg, the legendary stage and screen actress who was much beloved by Bond fans for her memorable performance as Tracy di Vicenzo in On Her Majesty’s Secret Service, the only woman to have married James Bond." pic.twitter.com/nqQCSg35oM— James Bond (@007) September 10, 2020
Other tributes from across the entertainment world flooded in online...
It was my great joy and privilege to have known Diana Rigg. From three slightly hysterical months at the Old Vic in ‘All About Mother’ to writing The Crimson Horror for Diana and her wonderful daughter Rachael. Flinty, fearless, fabulous. There will never be another. RIP pic.twitter.com/2EGc4MVx0S— Mark Gatiss (@Markgatiss) September 10, 2020
Funny, feisty, beautiful, intelligent & gifted. A whole generation fell for her when we first saw on screen in The Avengers. It’s the end of an era - and a special life. A sad day. RIP Dame Diana Rigg. https://t.co/2ezhNbVKyT— Gyles Brandreth (@GylesB1) September 10, 2020
RIP Dame Diana Rigg. Great actress and good sport - lest we forget, she let Daniel Radcliffe flick a condom on her head in Extras. pic.twitter.com/scFC8KPlZz— Stephen Merchant (@StephenMerchant) September 10, 2020
Dame Diana Rigg . She always raised the bar with her incredible talent, intelligence and wit. An absolute joy and honor to work with. May her soul Rest In Peace https://t.co/BC4annah1H— Nikolaj CosterWaldau (@nikolajcw) September 10, 2020
Oh NO! Not Dame Diana Rigg. She was a legend. What a shame, but what a legacy...— Rebecca Front (@RebeccaFront) September 10, 2020
RIP Diana Rigg. She was 82 and an absolute superstar x pic.twitter.com/TthwmxJNK7— Kay Burley (@KayBurley) September 10, 2020
Meanwhile, Bafta also paid tribute to Diana and her 60-year career in a statement posted on Twitter.
They said: “We’re sad to hear of the passing of Dame Diana Rigg, Bafta-winner for her performance in Mother Love in 1990 and joint recipient of the Bafta Television Special Award in 2000 for The Avengers.”
We're sad to hear of the passing of Dame Diana Rigg, BAFTA-winner for her performance in Mother Love in 1990 and joint recipient of the BAFTA Television Special Award in 2000 for The Avengers. pic.twitter.com/v0tzBczNKU— BAFTA (@BAFTA) September 10, 2020
Playwright Sir David Hare also wrote: “Diana Rigg had a dazzling change of direction in middle age as a great classical actor.
“When Emma Peel played Euripides’ Medea, Albee’s Martha and Brecht’s Mother Courage she swept all before her.”
Playwright Sir Tom Stoppard added: “For half her life Diana was the most beautiful woman in the room, but she was what used to be called a trooper.
“She went to work with her sleeves rolled up and a smile for everyone. Her talent was luminous.”
Diana’s death was announced in a statement from her agent Simon Beresford, who described her as a “much loved and admired member of her profession, a force of nature who loved her work and her fellow actors”.
Her daughter – actor Rachael Stirling – shared her own statement, revealing her mother had spent the months since her cancer diagnosis “joyfully reflecting on her extraordinary life, full of love, laughter and a deep pride in her profession”.
This article originally appeared on HuffPost UK and has been updated.