King Arthur is a 2004 film directed by Antoine Fuqua and written by David Franzoni. It stars Clive Owen as the title character, Ioan Gruffudd as Lancelot, and Keira Knightley as Guinevere.

The producers of the film claim to present a historically accurate version of the Arthurian legends, supposedly inspired by new archaeological findings. The accuracy of these claims is subject to debate, but the film is unusual in representing Arthur as a Roman officer rather than a medieval knight. It was shot in England, Ireland, and Wales.

Arthur, also known as Artorius Castus (Clive Owen), is portrayed as a Roman cavalry officer, the son of a Roman father and a Celtic mother, who commands a unit of Sarmatian auxiliary cavalry in Britain at the close of the Roman occupation in 467 A.D. He and his men guard Hadrian's Wall against the 'Woads', a group of native Britons who are rebels against Roman Rule, led by the mysterious Merlin (Stephen Dillane). He is not the first Arthur — for generations, his ancestors have manned the Wall, leading Sarmatian auxiliaries.

King Arthur is a legendary British leader of the late 5th and early 6th centuries, who, according to medieval histories and romances, led the defence of Britain against Saxon invaders in the early 6th century. The details of Arthur's story are mainly composed of folklore and literary invention, and his historical existence is debated and disputed by modern historians. The sparse historical background of Arthur is gleaned from various sources, including the Annales Cambriae, the Historia Brittonum, and the writings of Gildas. Arthur's name also occurs in early poetic sources such as Y Gododdin.

The legendary Arthur developed as a figure of international interest largely through the popularity of Geoffrey of Monmouth's fanciful and imaginative 12th-century Historia Regum Britanniae (History of the Kings of Britain). Some Welsh and Breton tales and poems relating the story of Arthur date from earlier than this work; in these works, Arthur appears either as a great warrior defending Britain from human and supernatural enemies or as a magical figure of folklore, sometimes associated with the Welsh Otherworld, Annwn. How much of Geoffrey's Historia (completed in 1138) was adapted from such earlier sources, rather than invented by Geoffrey himself, is unknown.

Hans Florian Zimmer, German pronunciation: [hans ˈfloːʁi̯aːn ˈtsɪmɐ]; (born 12 September 1957) is a German film composer and music producer. He has composed music for over 100 films, including award winning film scores for The Lion King (1994), Crimson Tide (1995), Gladiator (2000), The Last Samurai (2003),The Dark Knight (2008), and Inception (2010).

Zimmer spent the early part of his career in the United Kingdom before moving to the United States. He is the head of the film music division at DreamWorks studios, and works with other composers through the company which he founded, Remote Control Productions.

Zimmer's works are notable for integrating electronic music sounds with traditional orchestral arrangements. He has received four Grammy Awards, two Golden Globes, a Classical BRIT Award, and an Academy Award. He was also named on the list of Top 100 Living Geniuses, published by The Daily Telegraph.

Zimmer was born in Frankfurt am Main, Germany. As a young child, he lived in Königstein-Falkenstein, where he played the piano at home, but had piano lessons only briefly as he disliked the discipline of formal lessons. He moved to London as a teenager, where he attended Hurtwood House school. In an interview with the German television station ZDF in 2006, he commented: "My father died when I was just a child, and I escaped somehow into the music and music has been my best friend."

Richard Christopher Wakeman (born 18 May 1949) is an English keyboard player, composer and songwriter best known for being the former keyboardist in the progressive rock band Yes. He is also known for his solo albums, contributing to the BBC comedy series Grumpy Old Men and for Rick's Place, his former radio show on Planet Rock that aired until December 2010.

Wakeman was born in West London. He purchased his first electronic keyboard at 12 years of age. In 1968, he studied the piano, clarinet, orchestration and modern music at the Royal College of Music before leaving after a year in favour of session music work. He went on to feature on songs by artists including Black Sabbath,David Bowie, T. Rex, Elton John and Cat Stevens. Wakeman joined the folk group Strawbs in 1969 and played on three of their albums. He first joined Yes in 1971 to replace Tony Kaye, and left the group in 1974 to work on his solo career. He returned in 1976 before leaving with lead vocalist Jon Anderson in 1980. Wakeman was part of the side project Anderson Bruford Wakeman Howe, a group of ex-Yes members formed in 1989, and the eight-member Yes line-up that followed until his third departure in 1992. He returned for two years in 1995 and once more in 2002, where he was part of the band's 35th anniversary tour until its end in 2004.

Clive Owen (born 3 October 1964) is an English actor, who has worked on television, stage and film. He first gained recognition in the United Kingdom for portraying the lead in the ITV series Chancer from 1990 to 1991. He then garnered critical acclaim for his work in the film Close My Eyes (1991) before getting international notice for his performance as a struggling writer in Croupier (1998). In 2005, Owen won a Golden Globe and a BAFTA Award and was nominated for an Academy Award for Best Supporting Actor for his appearance in the drama Closer (2004). He has since played leading roles in films such as Sin City (2005), Inside Man (2006), Children of Men (2006), and The International (2009).

The fourth of five brothers, Owen was born in Coventry, in the English Midlands, a son of Pamela (née Cotton) and Jess Owen, a country and western singer of Welsh descent. His father left the family when Owen was three years old, and despite a brief reconciliation when Owen was nineteen, the two have remained estranged. Raised by his mother and stepfather, a railway ticket clerk, he has described his childhood as "rough." While initially opposed to drama school, he changed his mind in 1984, after a long and fruitless period of searching for work. Owen graduated from the Royal Academy of Dramatic Art in 1987 with a class that included Rebecca Pidgeon, Serena Harragin, Mark Womack, and Liza Tarbuck. After graduation, he won a position at the Young Vic, performing in several Shakespearean plays.