Question: Which English actor was known for his role in the 2004 BBC One spy drama Spooks?
Context: Craig Dougall McLachlan (born 1 September 1965) is a Gold Logie award-winning Australian actor, musician, singer and composer.  He has been involved in film, television and music theatre for 25 years.  He is best known for appearing in the soap operas "Neighbours" and "Home and Away" and the BBC One spy drama "Bugs".  He has portrayed the title role in "The Doctor Blake Mysteries", for which he is nominated for a Logie Award in 2016 for Logie Award for Most Popular Actor; he has previously won the award in this category three times. The series ten finale of the British spy drama television series "Spooks" was originally broadcast on BBC One on 23 October 2011.  It is the show's sixth episode of the tenth series and the 86th and final episode of "Spooks".  The episode was written by Jonathan Brackley and Sam Vincent, and directed by Bharat Nalluri.  The series finale concludes the "Tourmeline" story-arc that ran through the final series.  Section D tries to prevent a terrorist attack from a Russian ultranationalist that will disrupt a partnership between Russia and the United Kingdom, and push both nations into war. "Spooks" (known as "MI-5" in certain countries) is a BAFTA-winning British spy drama television series, created by David Wolstencroft.  It debuted on BBC One on 13 May 2002.  The series follows the activities of the intelligence officers of Section D in MI5. The first series of the British spy drama television series "Spooks" (known as MI-5 in the United States) began broadcasting on 13 May 2002 on BBC One, before ending on 17 June 2002.  It consists of six episodes.  "Spooks" follows the actions of Section D, a counter-terrorism division of the British Security Services (MI5).  Among the storylines, main character Tom Quinn faces dilemmas living a double life with his girlfriend, who at first does not know he is really a spy, and Tessa Phillips is running phantom agents for monetary gain.  Matthew Macfadyen, Keeley Hawes, David Oyelowo, Peter Firth, Jenny Agutter, Lisa Faulkner, Esther Hall, Heather Cave, Hugh Simon and Greame Mearns are listed as the main cast. An orthotube is a capsule-like high security interlocking door allowing entry to a building or office by one authorised person at a time.  Orthotubes are typically used by security and intelligence agencies, such as the Australian Security Intelligence Organisation and the United Kingdom Security Service to control access to buildings housing sensitive information.  The devices appear in the BBC spy drama Spooks, in which they are referred to as "pods". Raza Jaffrey (born 28 May 1975) is a British actor and singer, who starred as Dr. Neal Hudson on the CBS TV medical drama "Code Black".  He is best known for playing Zafar Younis on the BBC One spy drama series "Spooks".  In 2014, he played Pakistani Lieutenant Colonel Aasar Khan in season 4 of the Showtime series "Homeland". Robert Lewis Glenister (born 11th March 1960) is an English actor known for his roles as con man Ash "Three Socks" Morgan in the BBC television series "Hustle" and Nicholas Blake in the BBC spy drama "Spooks". The second series of the British spy drama television series "Spooks" (known as MI-5 in the United States) began broadcasting on 2 June 2003 on BBC One, before ending on 11 August 2003.  It consists of ten episodes.  "Spooks" centres on the actions of Section D, a counter-terrorism division of the British Security Services (MI5).  Matthew Macfadyen, Keeley Hawes, David Oyelowo, Peter Firth, Hugh Simon, Shauna Macdonald, Rory MacGregor, Natasha Little, Nicola Walker, Megan Dodds, Jenny Agutter and Enzo Cilenti are listed as the main cast. Rupert William Penry-Jones (born 22 September 1970) is an English actor, best known for his roles as Adam Carter in the BBC One spy drama series "Spooks", Clive Reader QC in the BBC One legal drama "Silk", policeman DI Joseph Chandler in the ITV murder mystery series "Whitechapel", and Mr. Quinlan in the FX horror series "The Strain". The third series of the British spy drama television series "Spooks" (known as MI-5 in the United States) began broadcasting on 11 October 2004 on BBC One, before ending on 13 December 2004.  It consists of ten episodes which continue to follow the actions of Section B, a counter-terrorism division of the British Security Services (MI5).  It also sees the departure of three principal characters: Tom Quinn (Matthew Macfadyen) is decommissioned in the second episode, Zoe Reynolds (Keeley Hawes) is exiled to Chile in the sixth episode, and Danny Hunter (David Oyelowo) is killed in the series finale.  In addition to Macfadyen, Hawes and Oyelowo, Peter Firth, Rupert Penry-Jones, Nicola Walker, Hugh Simon, Shauna Macdonald and Rory MacGregor are listed as the main cast.
Answer: Rupert Penry-Jones