cast
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Jared Harris
Valery Legasov
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Stellan Skarsgård
Boris Shcherbina
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Emily Watson
Ulana Khomyuk
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Paul Ritter
Anatoly Dyatlov
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Jessie Buckley
Lyudmilla Ignatenko
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Adam Nagaitis
Vasily Ignatenko
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Sam Troughton
Alexandr Akimov
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Robert Emms
Leonid Toptunov
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Con O'Neill
Viktor Bryukhanov
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Adrian Rawlins
Nikolai Fomin
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Alan Williams
KGB Chairman Charkov
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David Dencik
Mikhail Gorbachev
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Mark Lewis Jones
General Pikalov
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Ralph Ineson
General Tarakanov
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Barry Keoghan
Pavel
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Alex Ferns
Glukhov
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Fares Fares
Bacho
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Michael McElhatton
Prosecutor Andrei Stepashin
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Laura Elphinstone
Oksana
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Michael Socha
Mikhail
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Karl Davies
Viktor Proskuryakov
- Jan Ričica Oksana's Kid
- Nadia Clifford Dr. Svetlana Zinchenko
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Ron Cook
Old Maternity Doctor
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Donald Sumpter
Zharkov
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Philip Barantini
Bezpalov
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Oscar Dyekjær Giese
Baranov
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Baltasar Breki Samper
Ananenko
- Gerard Kearns Pravik
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Povilas Jatkevičius
Kibenok
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Darius Petkevičius
Local Husband
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Amanda Drew
Kremlin Aide Female
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Jamie Sives
Sitnikov
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Douggie McMeekin
Yuvchenko
- Cait Davis Local Wife at Bar
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Michael Shaeffer
Blond Man
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Adam Lundgren
Brazhnik
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Billy Postlethwaite
Boris Stolyarchuk
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Jay Simpson
Perevozchenko
- Ross Armstrong Nikolai Gorbachenko
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Paulius Markevičius
Aleksandr Kudryavstev
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Joshua Leese
Kirschenbaum
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Karolis Kasperavičius
Viktor Degtaryenko
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Sam Strike
Misha
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Sammy Hayman
Titenok
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Matas Dirginčius
Vladimir Tishchura
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Caolan Byrne
Day Shift Worker
- Stephen Bisland Night Shift Worker
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Alex Blake
Petrovich
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Matthew Needham
Dmitri
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Rosie Sheehy
Nurse Pripyat
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Tomas Žaibus
Soldier (Hospital)
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Peter Guinness
Major Burov
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Laurence Spellman
Commission Heli Pilot
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Alison Pargeter
BCP HQ Aide Female
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Victor McGuire
Garanin
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Sakalas Uždavinys
Ilya Ivanovich Chulkov
- Aidas Jurgaitis Soldier (Shelter)
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Aiste S. Gram
Bartender in Polyissa Hotel
- Daniel Crossley Stasiuk
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Lucy Russell
Marina Gruzinskaya
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Diarmaid Murtagh
Zukauskas
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Natasha Radski
Russian News Reader
- Yitzchak Averbuch General
- Joe Tucker Plant Employee
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Caoilfhionn Dunne
Yenina
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Pandora Colin
Dr. Vetrova
- Rachel Atkins Niyazova
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James Cosmo
Miner
- Arnas Danusas Soldier (Miner's Bus)
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Michael Colgan
Mikhail Shadov
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James Kermack
Miner
- Karolis Vilkas Miner
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June Watson
Old Woman Babushka
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Josef Altin
Soldier
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Sergejus Ivanovas
Survey Soldier
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Alexej Manvelov
Garo
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Josef Davies
Janek
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Velta Žygurė
Elderly Librarian
- Paulius Cizinauskas KGB Agent Library
- Mark Bagnall Jughashvili (Robot Operator)
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Ian Pirie
Site Officer Masha
- Andrew Sheridan Biorobot
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Lukas Malinauskas
Biorobot Soldier
- Marius Karolis Gotbergas Biorobot Soldier
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Simonas Dovidauskas
KGB Driver
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Hilton McRae
Judge Milan Kadnikov
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Kieran O'Brien
Khodemchuck
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Šarūnas Datenis
Soldier (Reactor Site)
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Deividas Breivė
Soldier (Mobile Office)
