Complex sentence: Educated at Bury Grammar School, after nine years working in theatre as a stage manager, he began broadcasting on the offshore station Radio 390 in 1966, before joining BBC Radio 2 to present country music programmes from 1976 to part of the late 1980s.
Split into simpler sentences: Educated at Bury Grammar School, Allan spent nine years working in theatre as a stage manager before he began broadcasting on the offshore station Radio 390 in 1966. Ten years later, he joined BBC Radio 2 to present country music programmes until the late 1980s.