 He worked as an announcer on Melbourne radio stations 3AK and 3XY, and was a regular guest on TV variety program "In Melbourne Tonight".McEwan's acting roles included parts in a large number of TV series and mini-series, including the regular roles of Detective Sergeant Dan Cullen in "Ryan", Nick in "Brass Monkeys", and numerous guest appearances in programs including "Homicide", the television adaptation of "And The Big Men Fly" (1974), "The Rise and Fall of Wellington Boots" (1975), "Cop Shop", "Sam's Luck" (1980), "The Last Bastion" (1984), "The Boardroom" (1988), "Jackaroo" (1990), and "The Gift" (1997),

Starting his career in radio in 1957, publicity stated that he was the youngest announcer in Australia at the time.He worked on overnight and breakfast shows.