Complex sentence: The station had a single island platform, with tracks on either side, an arrangement rarely seen on the underground network, this original platform is slightly further north than the modern day platform and present day trains still pass through it.
Split into simpler sentences: The station had a single island platform, with tracks on either side, an arrangement rarely seen on the Underground network. This original platform is slightly further north than the modern day platform, and present day trains still pass through it.