Matthew Robert Smith (born 28 October 1982) is an English actor and voice actor.
 He is best known for his role as the 11th incarnation of The Doctor in the BBC science fiction series "Doctor Who".
Stephen Campbell Moore (born Stephen Moore Thorpe; 30 November 1977) is an English actor, best known for his roles in the Alan Bennett play "The History Boys" and its subsequent film.
Thomas Morrison (born 30 June 1983) is an English actor who has performed in theatre, TV and film.
 He is best known for his appearances in "On the Shore of the Wide World" and as Scripps in Cast B and C of Alan Bennett's "The History Boys".
 working alongside Steven Webb and Matt Smith.
Samuel Barnett (born 25 April 1980) is an English actor.
 He has performed on stage, film, television and radio, and achieved recognition for his work on the stage and film versions of "The History Boys" by Alan Bennett.
 His television performances include roles in the BBC comedy "Twenty Twelve" and in the Showtime drama "Penny Dreadful".
 On 29 March 2016 it was announced that he had been cast as Dirk Gently in the BBC America adaptation of the "Dirk Gently's Holistic Detective Agency" book series by Douglas Adams.
The War Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television programme "Doctor Who".
 He was portrayed by the English actor John Hurt.
 Although he precedes Christopher Eccleston's Ninth Doctor in the show's fictional chronology, his first onscreen appearance came eight years after Eccleston's; the War Doctor was retroactively created by showrunner Steven Moffat for productions celebrating the show's 50th anniversary.
Nicholas Briggs (born 29 September 1961 in Lyndhurst, Hampshire, England) is an English actor, writer, director, sound designer, composer and voice actor predominantly associated with the BBC science fiction television series "Doctor Who" and its various spin-offs, particularly as the voice of the Daleks and the Cybermen.
 He is also a co-creator of Big Finish Productions, for which he has produced, directed and written several audio plays, as well as acting in many of them.
Richard K. Franklin (born 15 January 1936) is an English actor, writer, director and political activist.
 Principally a stage actor, he has also appeared as a regular character in several high-profile British television programmes, including "Crossroads," "Emmerdale Farm," and most notably in the BBC science fiction television series "Doctor Who," in which he portrayed Captain Mike Yates of UNIT.
 Franklin initially played the part from 1971 until 1974, but has returned to the role on a number of occasions both on television and in Doctor Who spin-off media.
 Franklin is a prolific dramatist and author of books such as "Forest Wisdom: Radical Reform of Democracy and the Welfare State" reflecting his left-wing political views and activism, as well as novels based in the Doctor Who universe.
 Franklin has stood as an independent candidate for Parliament several times, founded the Silent Majority Party, and is a supporter of the current Labour Party leader Jeremy Corbyn.
The Tenth Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television programme "Doctor Who", who is played by David Tennant in three series as well as nine specials.
 As with previous incarnations of the Doctor, the character has also appeared in other "Doctor Who" spin-offs.
 In the programme's narrative, the Doctor is a centuries-old Time Lord alien from the planet Gallifrey who travels in time in his TARDIS, frequently with companions.
 When the Doctor is critically injured beyond medical repair, he can regenerate his body; in doing so, his physical appearance and personality change, and a new actor assumes the role.
 Tennant's portrayal of the Doctor is of an outwardly charismatic and charming adventurer whose likable and easygoing attitude can quickly turn to righteous fury when provoked.
Annette Badland (born 26 August 1949) is an English actress known for a wide range of roles on TV, radio and film.
 She has played Margaret Blaine in the BBC science fiction series "Doctor Who", Doomsday Dora in "The Sparticle Mystery", Birdie Henshall in the drama series "Cutting It", Mavis in season 6 of "Skins", Ursula Crowe in children's science fiction/fantasy series "Wizards vs Aliens", Mrs. Glenna Fitzgibbons in season 1 of "Outlander" and Babe Smith in soap opera "EastEnders".
 Badland plays Hazel Woolley in BBC Radio "The Archers".
Freema Agyeman ( ; born Frema Agyeman; 20 March 1979) is an English actress who is known for playing Martha Jones in the BBC science fiction series "Doctor Who" and its spin-off series "Torchwood", and Amanita Caplan in the Netflix science fiction drama "Sense8".

Question: Which English actor and voice actor appeared in the  the BBC science fiction series "Doctor Who" and Alan Bennett's "The History Boys?"
Answer: Matt Smith