Complex sentence: The station entrance and buildings lie between the two arms of the Y. The isolated National Rail platform is disused and overgrown, but the National Rail platform on the central island is in working order, although it is not served by trains.
Split into simpler sentences: The station entrance and buildings are positioned between the two arms of the Y. The isolated National Rail platform is disused and overgrown. The National Rail platform on the central island is in working order, but is not served by trains.