Mark featured on RTE Radio variously during his tenure as PRO of the Irish Chess Union (2006-7). In 2015 he contributed to a number of Arena programs on RTE Radio 1 as a guest expert on the American novelist Thomas Pynchon and subsequently as a film reviewer. In 2004 Mark was invited onto RTE Radio 1 during the Athens Olympics to discuss his book, The King of Spring. The Life and Times of Peter O’Connor, with broadcaster Tom McGurk.Italian chess documentary Mark contributed to which was filmed during the Turin Chess Olympiad in 2006. Clip of Mark discussing his 2004 biography ‘The King of Spring’ on RTE’s TV Series ‘Secret Sites’.