Born in Newport in Wales, Keiron Self read English at Oxford before studying at the Welsh College of Music and Drama. On leaving in 1993, he and some colleagues set up "just for a laugh" the Mappa Mundi theatre group to produce their own versions of classic plays. The same year he married actress Lynne Seymour, Ophelia to his Hamlet, and they have twins, Molly and Jake, born in 2001. Initially supported almost entirely by box office returns Mappa Mundi joined with Theatr Mwldan in 2006, and have been acclaimed for their innovative productions, including a cross-dressing King Lear and an all-male Taming of the Shrew. Though touring largely in Wales their recent productions of 'She Stoops To Conquer' and 'Dangerous Liaisons' were also acclaimed at venues in England. In 2007 Keiron was one of several established Welsh talents to lend support to 'It's My Shout', an arts project designed to support budding young Welsh performers. He is also a writer, having provided scripts for several children's television shows but is probably best remembered as ditzy dentist Roger Bailey in the 'My Family' sitcom -initially intended to appear in one episode but so endearingly goofy that he became a regular character. As of 2010 he and his family live in Cardiff.

Source for Keiron Self trivia is an article in the Cardiff Western Mail, April 17th 2010.