Complex sentence: Choice 96.9 began broadcasting in March 1990 from studios in Trinity Gardens, Brixton as Britain's first 24 hour black music radio station with a licence, under independent ownership, covering South London.
Split into simpler sentences: Choice 96.9 began as an independent company in March 1990, broadcasting from studios in Trinity Gardens, Brixton. It was Britain's first 24 hour black music radio station with a licence, covering South London.