FX’s “Alien: Earth” enters production for its second season in London, and the series has added three new cast members. Variety, Deadline, and other outlets report that Tracey Ullman, Sam Spruell, and Jerome Flynn have joined the ensemble. Ullman and Spruell are new additions, while Flynn—known for “Game of Thrones”—also joins the cast for Season 2. The new hires are expected to appear alongside returning cast members Sydney Chandler and Alex Lawther, according to multiple reports. Variety also notes that previously announced Peter Dinklage is part of the Season 2 cast. Several outlets describe “Alien: Earth” as a prequel set in the broader “Alien” franchise. While coverage agrees on the casting and London-based production start, one outlet also projects a 2027 premiere window on FX and Hulu. Across sources, the central point is that Season 2 expands its cast with these three actors as filming begins in London, with additional returning and previously announced performers already attached to the project.