Career
Born in London, England, Mattingly was featured in Alexander Galt: The Stubborn Idealist (1962), King Rat (1965), and The Bermuda Triangle (1979). In the 1960s and 1970s, he guest-starred in the National Broadcasting Company television series Thriller (1962). He also appeared on The Alfred Hitchcock Hour, Perry Mason, Mannix, Night Gallery, Ironside, and Columbo.
His last appearance was in the film Riot (1997), with Sugar Ray Leonard.
Mattingly portrayed Officer Hedley in the Columbia Broadcasting System series, Daktari (1966–1969) starring Marshall Thompson in the title role.
