Filming of the next Game of Thrones spin-off is officially under way, as House of the Dragon season 2 helps Max to its biggest day ever

A still from the upcoming show A Knight of Seven Kingdoms
(Image credit: HBO)

Filming is officially under way on another Game of Thrones spin-off, as House of the Dragon season two helped the streaming service Max to its biggest day ever.

According to Warner Bros. Discovery (WBD), some 7.8 million people tuned in to watch the first episode of House of the Dragon's second run on Sunday (June 16), across both HBO and Max; that figure was down from the 10 million who watched the first season's premiere, but it still helped Max to its biggest global streaming day ever, according to Variety. Admittedly, the comparison is not exact, given that Max didn't exist when HOTD S1 arrived, but it's still an impressive figure all the same.  

Now WBD has confirmed that production of another Game of Thrones spin-off, A Knight of the Seven Kingdoms, has officially started, and revealed five more cast members set to join the show's ensemble. The five in question are Finn Bennett (True Detective: Night Country) as Aerion Targaryen, Bertie Carvel (The Crown) as Baelor Targaryen, Tanzyn Crawford (Tiny Beautiful Things) as Tanselle, Daniel Ings (The Gentlmen) as Ser Lyonel Baratheon and finally Sam Spruell (Fargo) as Maekar Targaryen.

It was also announced that Owen Harris, the director of Black Mirror's best episode 'San Junipero' (he was also behind 'Be Right Back'), would be joined by Sarah Adina Smith (Lessons in Chemistry) in the director's chair for three of the six episodes. 

The show, which is adapted from George RR Martin's Tales of Dunk and Egg novels, is not due to be released until late 2025 but given the popularity of the Game of Thrones prequel, it's likely to be one of the best Max shows.

More Westeros adventures are coming

RR Martin once said in an interview with The Guardian that when he started writing Game of Thrones, he originally thought it might be a short story. How wrong he was. Since the original show wrapped in 2019, it has spawned its own fledgling TV ecosystem, with eight spin-off shows said to be in development at HBO last year.

At least one of those is now seemingly dead, with Kit Harington revealing that a mooted series about Jon Snow was "off the table" in an interview in April. However, that could still leave as many as seven projects to look forward to. And that doesn't even include season three of House of the Dragon, which has already been confirmed, so there's plenty of Westeros action in the pipeline. 

You might also like

Amelia Schwanke
Senior Editor UK, Home Entertainment

Amelia became the Senior Editor for Home Entertainment at TechRadar in the UK in April 2023. With a background of more than eight years in tech and finance publishing, she's now leading our coverage to bring you a fresh perspective on everything to do with TV and audio. When she's not tinkering with the latest gadgets and gizmos in the ever-evolving world of home entertainment, you’ll find her watching movies, taking pictures and travelling.

Read more
Lord Yoshii Toranaga holds his sword as he rides his horse in a promo image for Shōgun season 1, the forebear of Shōgun season 2
Shōgun season 2: everything we know so far about the hit show's return on Hulu and Disney Plus
Galadriel and Sauron do battle above Eregion in The Rings of Power season 2, the precursor to The Rings of Power season 3
The Rings of Power season 3: everything we know so far about the hit Prime Video show's next entry
Galadriel desperately trying to fight off Sauron in The Rings of Power season 2 episode 8
The Rings of Power season 3 is officially in the works for Prime Video – and the hit Amazon show's next entry will feature a big time jump
Rand carries Moiraine through a desert in The Wheel of Time season 3
The Wheel of Time season 3: release date, trailer, confirmed cast, story synopsis, and more news about the Prime Video show's return
A group of people, including Rand and Moiraine, standing on a sandy cliff in The Wheel of Time season 3
'It's bigger, bolder, and bleaker': The Wheel of Time season 3 cast teases what to expect from the Prime Video show's most daunting chapter yet
Benedict looks to the right in his mask in Bridgerton season 4
Bridgerton season 4: everything we know so far about the hugely successful Netflix show's return
Latest in HBO Max
The Righteous Gemstones
Max's #4 most-watched show is The Righteous Gemstones – here are 3 more great comedies with over 90% on Rotten Tomatoes
The cast of The Parenting
The Parenting is Max's #1 most-watched movie but it has frightening reviews – here are 3 better horror films with over 90% on Rotten Tomatoes
Y2K cast looking shocked
Y2K has a streaming release date on Max, so you can witness the technology uprising at home
A collage of Ellie and Joel in The Last of Us season 2
The Last of Us season 2's new trailer teases a huge showdown between Bella Ramsey's Ellie and Pedro Pascal's Joel, but the big moment I'm waiting for is still being held back
ER doctors, including Dr. Michael "Robby" Rabinavitch (Noah Wyle) attend to a patient in The Pitt
Max's #2 show The Pitt has left viewers breathless – here are 3 more medical dramas with over 85% on Rotten Tomatoes to get your heart pounding
A piece of paper with the words 'an HBO Original film' on it next to a pile of snow
Jesse Armstrong’s next HBO Original sounds like another Succession-style satire starring Steve Carrell and Jason Schwartzman
Latest in News
Pebble smartwatch countdown
Pebble confirms its smartwatch announcement is just hours away
Google DeepMind panel discussion
“More sovereignty and protection” - Google goes all-in on UK AI with data residency, upskilling projects, and startup investments
Nintendo Switch 2
Nintendo Switch 2 expected to have AI upscaling and I can't wait to finally play Tears of the Kingdom with upgraded graphics
PowerColor Red Devil AMD RX 9070 XT graphics card shown side-on
Your next GPU could be from AMD, not Nvidia, if Team Red’s success with PC gamers continues
Intel Lunar Lake concept
Intel's Panther Lake processors won't arrive until Q1 2026 - corroborates previous delay rumors despite former Intel CEO's promise of 2025 launch
Quordle on a smartphone held in a hand
Quordle hints and answers for Tuesday, March 18 (game #1149)