The screenplay was by Talbot Jennings, Jan Lustig and Noel Langley from Sir Thomas Malory's Le Morte d'Arthur, first published in 1485 by William Caxton.

The film was the second in an unofficial trilogy made by the same director and producer and starring Robert Taylor, coming between Ivanhoe (1952) and The Adventures of Quentin Durward (1955).

The cast included Robert Taylor as Sir Lancelot, Ava Gardner as Queen Guinevere, Mel Ferrer as King Arthur, Anne Crawford as Morgan le Fay, Stanley Baker as Modred and Felix Aylmer as Merlin.

"Freddie" Young), composer (Miklós Rózsa), art director (Alfred Junge) and costume designer (Roger Furse).

With Britain in anarchy, warring overlords Arthur Pendragon and his half-sister Morgan LeFay meet as arranged by the sorcerer Merlin to discuss how to end the bloodshed.

Morgan and Modred, who continue to harbor ill feelings against Arthur, note with interest the growing warmth between Lancelot and Guinevere.

To distance himself from Guinevere, Lancelot marries Elaine and rides north to defend England's border with Scotland, while Percival, now a knight of the Round Table, goes in search of the Holy Grail.

A truce is briefly agreed upon but collapses when a knight draws his sword to kill a snake, sparking the Battle of Camlann.

Mortally wounded in the battle, Arthur asks Lancelot to destroy Modred and give Guinevere his love and forgiveness.

All names with an asterisk (*) are credited on the "Cast" page (p62) of Knights of the Round Table: A Story of King Arthur - Text based on the Metro-Goldwyn-Mayer film (Ward, Lock • London and Melbourne) [1954] Some performers - the first two here appearing in several scenes and with several lines to speak - were uncredited.

George Sanders was originally cast as Modred but fell ill prior to shooting and was replaced by Stanley Baker, who had just made an impression in The Cruel Sea (1953).

The judge ruled that both the film and the earlier script were based on Le Morte d'Arthur and Alfred, Lord Tennyson's Idylls of the King and rejected the claim.

[11] Decent Films Guide reviewer Steven D. Greydanus gave the film a "B", writing that "a solid adaptation of the King Arthur legend, Knights of the Round Table benefits from its colorful pageantry and strongly Christian milieu, including a royal Catholic wedding and a transcendent moment of revelation involving the Holy Grail".

[12] Knights of the Round Table was nominated for two Academy Awards for Best Art Direction-Set Decoration, Color (Alfred Junge, Hans Peters, John Jarvis) and Sound Recording (A. W.