Cast

• David Dencik — Mikhail Gorbachev
• Emily Watson — Ulana Khomyuk
• Jared Harris — Valery Legasov
• Stellan Skarsgård — Boris Shcherbina
• Adrian Rawlins — Nikolai Fomin
• Alex Ferns — Glukhov
• Con O'Neill — Viktor Bryukhanov
• Jessie Buckley — Lyudmila Ignatenko
• Paul Ritter — Anatoly Dyatlov
• Robert Emms — Leonid Toptunov
• Sam Troughton — Aleksandr Akimov