"Over 600,000 people were conscripted to serve in the Exclusion Zone. Despite widespread accounts of sickness and death as a result of radiation, the Soviet government kept no official records of their fate."

"Legasov was aided by dozens of scientists who worked tirelessly alongside him at Chernobyl. Some spoke out against the official account of events and were subject to denunciation, arrest and imprisonment. The character of Ulana Khomyuk was created to represent them all and to honor their dedication and service to truth and humanity."

"Of the people who watched from the railway bridge, it has been reported that none survived. It is now known as "The Bridge of Death"."

"400 miners worked around the clock for one month to prevent a total nuclear meltdown. It is estimated that at least 100 of them died before the age of 40."

"For their roles in the Chernobyl disaster, Viktor Bryukhanov, Anatoly Dyatlov and Nikolai Fomin were sentenced to ten years hard labor. After his release, Nikolai Fomin returned to work...at a nuclear power plant in Kalinin, Russia. Anatoly Dyatlov died from radiation-related illness in 1995. He was 64."

"Following the explosion, there was a dramatic spike in cancer rates across Ukraine and Belarus. The highest increase was among children."

"Mikhail Gorbachev presided over the Soviet Union until its dissolution in 1991. In 2006, he wrote, "The nuclear meltdown at Chernobyl... was perhaps the true cause of the collapse of the Soviet Union.""

"It has been widely reported that the three divers who drained the bubbler tanks died as a result of their heroic actions. In fact, all three survived after hospitalization. Two are still alive today."

"David Dencik - Mikhail Gorbachev"

"Paul Ritter -"

"We will never know the actual human cost of Chernobyl. Most estimates range from 4,000 to 93,000 deaths. The official Soviet death toll, unchanged since 1987...is 31."

"Patrick McGoohan - John Drake"

"Avery Brooks as Narrator. (US version)"

"Kenneth Branagh as Narrator. (UK version)"

"Jeremy Clarkson"

"Richard Hammond"

"Joanne Whalley - Catherine of Aragon"

"Tom Holland - Gregory Cromwell"

"Jonathan Pryce - Cardinal Thomas Wolsey"

"Bernard Hill - Thomas Howard, Duke of Norfolk"

"Kate Phillips - Jane Seymour"

"Mark Rylance - Thomas Cromwell"

"Thomas Brodie-Sangster - Ralph Sadler"

"Mathieu Amalric - Eustace Chapuys"

"Damian Lewis - King Henry VIII"

"Claire Foy - Anne Boleyn"

"Anton Lesser - Thomas More"

"Mark Gatiss - Stephen Gardiner"

"Jim Broadbent - Scottie"

"Edward Holcroft - Alex Turner"

"Charlotte Rampling - Frances"

"Ben Whishaw - Danny Holt"

"Tom Burke - Bill Kendall, from the Uncovered crew"

"Anton Lesser - Clarence Fendley, Head of news (season 1)"

"Ben Whishaw - Frederick "Freddie" Lyon, journalist"

"Romola Garai - Isobel "Bel" Rowley, producer of The Hour"

"Dominic West - Hector Madden, frontman and journalist"

"Oona Castilla Chaplin - Marnie Madden, Hector's wife"

"Joshua McGuire - Isaac Wengrow, Freddie's assistant"

"Peter Capaldi - Randall Brown, Head of news (season 2)"

"Anna Chancellor - Lix Storm, journalist"

"Robert Scroggins — Brian, Lancelot's squire"

"Cyril Smith — Merlin"

"David Morrell — Sir Kay"

"William Russell — Sir Lancelot"

"Ronald Leigh-Hunt — King Arthur"

"Jane Hylton — Guinevere"

"Jack Hartley - Billy Lovelock"

"Matthew Postlethwaite - Nipper"

"Allan Hopwood - Abbey Heath"