A storage apparatus has an rack of storage bins, a pick head drive unit to drive a pick head to an access location for a selected bin, and a platform drive unit to drive a platform forming part of the pick head into and out of the rack to pick or load packages at a selected bin of the rack. The platform has a cam formation which, in the course of entry of the platform into the rack acting to lift a desired package until the platform reaches a clearance position at which the cam formation clears the package. Subsequent withdrawal of the platform from the rack acts to drag the desired package from the selected bin.