FX’s Alien: Earth is beginning production on its second season in London, and the series has added three new cast members, according to multiple outlets. Tracey Ullman, Sam Spruell, and Jerome Flynn are set to appear in the upcoming season. Variety reports the trio will join previously announced new cast member Peter Dinklage, along with returning star Sydney Chandler and other cast including Alex Lawther and additional performers mentioned by the outlet. Deadline similarly places the new hires as production gets underway in London. ComingSoon.net also highlights the additions and notes that Flynn is known for his Game of Thrones work, alongside the broader excitement around the season’s expanding cast. The reporting collectively frames the announcements as part of the ongoing second-season casting rollout for Noah Hawley’s Alien spin-off series, which debuted its first season in 2025. The outlets do not provide specific character names, roles, or plot details for the new cast members in their shared coverage. Production for Season 2 is underway as casting updates are released.