Complex sentence: Stirling, a stage actor originally from Scotland, joined the Royal Scottish Academy of Music and Drama in 1974 and freelanced at Westward before becoming a full-time staff announcer in 1975.
Split into simpler sentences: Stirling, a stage actor originally from Scotland, joined the Royal Scottish Academy of Music and Drama in 1974. Stirling freelanced at Westward before becoming a full-time staff announcer in 1975.