Christopher Thomas Prior (born December 1990)[1] is an English actor, known for his lead role as Sergey in the British-Estonian historical romantic drama Firebird.
He has also appeared in supporting roles in Kingsman: The Secret Service and in The Theory of Everything as Stephen Hawking's son Robert.
[3] In 2002, he appeared in Fire from Heaven, produced by the Dorchester Community Plays Association.
[5] Prior's West End debut was in 2013 in a trio of plays produced by the National Youth Theatre: Tory Boyz by James Graham; Romeo and Juliet; and Prince of Denmark, a Hamlet prequel by Michael Lesslie.
[11] The film is about the real-life romance between a conscript, Sergey Fetisov, and a fighter pilot in Soviet era Estonia.