Question: From what town is the actor from who played Denham in the 1967 film directed by James Clavell?

Context paragraphs:
The Last Valley (1971 film): The Last Valley is a 1971 film directed by James Clavell, a historical drama set during the Thirty Years' War (1618–1648).  A mercenary soldier (Michael Caine) and a teacher (Omar Sharif), each fleeing the religious war in southern Germany, accidentally find the valley, untouched by the war, and there live in peace.  Based upon the novel "The Last Valley" (1959), by J.B. Pick, the cinematic version of "The Last Valley", directed by James Clavell, was the final feature film photographed with the Todd-AO 70 mm widescreen process until it was revived to make the film "Baraka" in 1991.

James Clavell: James Clavell (10 October 1921 – 6 September 1994), born Charles Edmund Dumaresq Clavell, was an Australian-born British (later naturalized American) novelist, screenwriter, director, and World War II veteran and prisoner of war.  Clavell is best known as a writer for his The Asian Saga series of novels and their televised adaptations.  Clavell also authored screenplays, such as "The Great Escape" (1963) and "To Sir, with Love" (1967).  Clavell wrote science fiction, as well, including an episode of the early sci-fi TV series 'Men Into Space' in 1959, titled 'First Woman on the Moon,' as well as the film script for the original (1958) version of the sci-fi/horror classic "The Fly", starring Vincent Price.

Christian Roberts (actor): Christian Roberts (born 17 March 1944 in Southmoor, Berkshire, England) is an English actor, best remembered for his role as the rebellious Denham in the 1967 film "To Sir, with Love" starring Sidney Poitier and Judy Geeson.

Walk Like a Dragon: Walk Like a Dragon is a 1960 American Western film directed by James Clavell and written by James Clavell and Daniel Mainwaring.  The film stars Jack Lord, Nobu McCarthy, James Shigeta, Mel Tormé, Josephine Hutchinson, Rodolfo Acosta and Benson Fong.  The film was released on June 1, 1960, by Paramount Pictures.

Watusi (film): Watusi is a 1959 Metro-Goldwyn-Mayer adventure film directed by Kurt Neumann and produced by Al Zimbalist and Donald Zimbalist.  The screenplay was by James Clavell loosely based on the novel "King Solomon's Mines" by H. Rider Haggard.  The film stars George Montgomery, Taina Elg, David Farrar and Rex Ingram.

To Sir, with Love: To Sir, with Love is a 1967 British drama film that deals with social and racial issues in an inner city school.  It stars Sidney Poitier and features Christian Roberts, Judy Geeson, Suzy Kendall and singer Lulu making her film debut.  James Clavell (who had written "The Children's Story" three years prior) directed from his own screenplay, which was based on E. R. Braithwaite's 1959 autobiographical novel of the same name.

Five Gates to Hell: Five Gates to Hell is a 1959 American adventure film written and directed by James Clavell.  The film stars Dolores Michaels, Patricia Owens, Neville Brand, Ken Scott, Nobu McCarthy and Benson Fong.  The film was released on September 23, 1959, by 20th Century Fox.

Tai-Pan (film): Tai-Pan is a 1986 film directed by Daryl Duke, loosely based on James Clavell's 1966 eponymous novel.  While many of the same characters and plot twists are maintained, a few smaller occurrences are left out.  Filmed under communist Chinese censorship, some portions of Clavell's story were considered too offensive to be filmed as written and considerable changes were made.

To Sir With Love (song): "To Sir With Love" is the theme from James Clavell's 1967 film "To Sir, with Love".  The song was written by Don Black and Mark London (husband of Lulu's longtime manager Marion Massey).  Mickie Most produced the record, with Mike Leander arranging and conducting.  In her recording, Lulu makes notable use of melisma.

King Rat (film): King Rat is a 1965 World War II film directed by Bryan Forbes, and starring George Segal as Corporal King and James Fox as Marlowe, two World War II prisoners of war in a squalid camp near Singapore.  Among the supporting cast were John Mills and Tom Courtenay.  The film was adapted from James Clavell's novel "King Rat" (1962), which in turn is partly based on Clavell's experiences as a POW at Changi Prison during the Second World War.

Supporting paragraphs: Christian Roberts (actor) To Sir, with Love
Answer: Southmoor, Berkshire, England