Complex sentence: The club was formerly based at Cambridge House at 94 Piccadilly opposite Green Park and came to be known as "The In & Out" from the prominent signs on the building's separate vehicle entrance and exit gates.
Split into simpler sentences: The club was formerly based at Cambridge House at 94 Piccadilly, opposite Green Park. It came to be known as "The In & Out" from the prominent signs on the building's separate vehicle entrance and exit gates.