"Excalibur" (UK, 1981), a long-held dream project of Boorman's, is a retelling of the Arthurian legend, based on "Le Morte D'Arthur". Boorman cast actors Nicol Williamson and Helen Mirren against their protests, as the two disliked each other intensely, but Boorman felt their mutual antagonism would enhance their characterizations of the characters they were playing. The production was based in the Republic of Ireland, where Boorman had relocated. For the film he employed all of his children as actors and crew and several of Boorman's later films have been 'family business' productions. The film, one of the first to be produced by Orion Films, was a moderate success.