A subsequent appeal confirmed that corporate manslaughter is a charge known to English criminal law, and with the revival of gross negligence as a "mens rea" for manslaughter, it was thought that prosecutions might succeed. However, a prosecution of Great Western Trains following the Southall rail crash collapsed because "the Crown was not in a position to satisfy the doctrine of identification" (Turner J). Only the company itself and the train driver, Mr Larry Harrison, were prosecuted. Since the train driver is not someone of a managerial or directorial level, the case against him was dismissed in the opening arguments. Because the only other defendant was GWT, a corporation, this meant that it was impossible to identify a controlling mind for the purposes of holding an individual personally liable for manslaughter.