 The stations each had three platforms ; a broad island platform in the centre for passengers waiting to board trains , and narrower outer platforms from which passengers exited the trains . Although the upper station was known as Hereson Road from the outset , the lower station was never officially named . It was known at various times as " Olympia " , " Beach " , " Sands " and " Lower Terminus " . The platforms and ticket offices were immediately outside the mouth of the tunnel at both stations . 
