Complex sentence: The Leicester Square Theatre is since 2008 the name of a 400-seat theatre near Leicester Square, in the City of Westminster, London, previously known as Notre Dame Hall, Cavern in the Town and The Venue.
Split into simpler sentences: The Leicester Square Theatre is a 400-seat theatre near Leicester Square, in the City of Westminster, London. It was previously known as Notre Dame Hall, Cavern in the Town and The Venue.