Samuel Barnett is best known for playing Posner in The History Boys (2006), Adam in Being Human (2009–2012) and Renfield in Penny Dreadful (2014–2016).
Films
- The History BoysPosner2006
- Starter for 10Spencer2006
- Bright Young ThingsSimon2003
TV shows
- Dirk Gently’s Holistic Detective AgencyDirk Gently2016–2017
- Penny DreadfulRenfield2014–2016
- Being HumanAdam2009–2012
- Little BritainSoldier2005
- Holby CityBen2003
- The BillGary2002
- DoctorsMike2001
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About Samuel Barnett
Samuel Barnett is an English actor acclaimed for his stage and screen work. He rose to prominence playing the schoolboy Posner in the original stage and film versions of The History Boys, and has since taken on varied television roles including the vampire Adam in Being Human and the enigmatic Renfield in Penny Dreadful.
FAQs
What is Samuel Barnett’s most famous role?
His most famous role is probably Posner in The History Boys, a part he originated in the National Theatre and reprised in the 2006 film.
Did Samuel Barnett appear in Doctor Who?
He has not appeared in the TV series, but he has voiced characters in Doctor Who audio dramas.
Is Samuel Barnett primarily a stage or screen actor?
He is equally accomplished in both, with a strong background in theatre (including The History Boys and The Curious Incident of the Dog in the Night-Time) and notable television roles.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026