Question: What English actor, who starred as Dr Hanson in the drama "Cranford", plays Gaius Octavian in the HBO/BBC2 original television series, "Rome"?

Context articles: Cato the Younger (Rome character)
Max Pirkis
Posca (Rome character)
Simon Woods
Marcus Tullius Cicero (Rome character)
Erastes Fulmen
Gaius Octavian (Rome character)
Gnaeus Pompey Magnus (Rome character)
Quintus Valerius Pompey
Gaius Cassius Longinus (Rome character)

Cato the Younger is a historical figure who features as a character in the HBO/BBC2 original television series "Rome", played by actor Karl Johnson.
 He is depicted as an extreme traditionalist, against political and social decay, and a staunch defender of the Roman Republic.
 The real Cato the Younger was a Roman orator and politician.
Max Pirkis (born 6 January 1989) is an English actor.
 Appearing in two productions during the mid-2000s, Pirkis made his film debut in "" (2003) after the film crew recruited him at his school, Eton College.
 In a critically praised performance, he won the Evening Standard British Film Award for Most Promising Newcomer and the Young Artist Award for Best Young Actor in an International Film.
 Two years later, Pirkis was cast in the BBC/HBO television series "Rome" as Gaius Octavian, a role he held until 2007.
Posca is a fictional character in the HBO/BBC2 original television series "Rome", played by Nicholas Woodeson.
 He is the body slave of Julius Caesar, yet is also his friend, aide-de-camp, and confidante in many things personal and professional.
 As a slave, he will seldom receive credit, but it appears that many of the more simple and elegant solutions to Caesar's problems come from the mind of Posca.
 Posca is freed and given a stipend in Caesar's will at the start of the second season but seems to have thrown his support behind Antony in later episodes.
Simon Woods (born 1980) is an English actor best known for his role as Octavian in Season 2 of the British-American television series "Rome" and the 2005 "Pride & Prejudice" as Charles Bingley.
 He also starred as Dr Harrison in the BBC1 costume drama series "Cranford", whose arrival in the village "sets female hearts racing."
Marcus Tullius Cicero is a historical figure who features as a character in the HBO/BBC2 original television series "Rome", played by David Bamber.
 He is depicted as a moderate politician and scholar, who is challenged with trying to save the traditional Republic from the ambitions of the various characters on the show.
 The real Cicero was a Roman politician, writer, and orator.
Erastes Fulmen is a fictional character in the HBO/BBC2 original television series "Rome", played by Irish actor Lorcan Cranitch.
 He is depicted as a ruthless businessman, who over the course of the first season becomes one of the leading figures in the Roman underworld.
 Erastes means "lover" and Fulmen means "lightning".
Gaius Octavian is a character in the HBO/BBC2 original television series "Rome", played by Max Pirkis as a child in season one and the beginning of season two, and in the rest of the second season he is played by Simon Woods.
 He is portrayed as a shrewd, if somewhat cold, young man, with an understanding of the world, people, philosophy, and politics that go well beyond his years.
 Despite this he is very power hungry, unaccomplished and uses the accomplishments of his male relatives in order to further his political career.
 The basis for this character is the early life of Augustus, the first Roman Emperor.
Gnaeus Pompey Magnus is a character in the HBO/BBC2 original television series "Rome", played by Kenneth Cranham.
 He is depicted as a legendary general, past the days of his prime, who tries to recapture the glories of his youth as much as to do what is right for the Republic.
 The real Gnaeus Pompeius Magnus was a Roman general and politician, who, while as ambitious as Caesar, and just as unorthodox in his youth, chose to ally himself with the optimates in opposing Caesar and supporting the traditional Roman Republic.
Quintus Valerius Pompey is a fictional character in the HBO/BBC2 original television series, "Rome", played by Rick Warden.
 He is described as the "natural son" of Pompey.
 The basis for this character is unclear.
 There is no historical mention of a "Quintus Valerius Pompey", though a lineage with the name Quintus Pompeius (relatives of Pompeia, wife of Julius Caesar) instead existed, but the character may be meant to represent the two sons of Pompey, Sextus Pompeius and Gnaeus Pompeius.
 He is mentioned to be a great sailor, a trait which Sextus Pompeius had.
 He also exhibits some of traits reportedly held by the Optimate general Titus Labienus.
Gaius Cassius Longinus is a historical figure who features as a character in the HBO/BBC2 original television series "Rome", played by Guy Henry.
 Cassius is depicted as a passion-filled man who is one of the first people who wants Caesar dead.
 He is one of the figures who devised the plot for Caesar's death, and also acted as one of the assassins.
 The real Cassius was also one of the main players in the death of Caesar.