3801 Limited was formed in 1985 to maintain and operate locomotive
3801 and now, as well, operates heritage diesel locomotives and heritage
3801 Limited runs day tours and charters to the Blue Mountains, the
Hunter area and the Southern Highlands as well as regular tours to rural
areas. In addition, the company runs the Cockatoo Run on Wednesdays
and Sundays on the Unanderra to Moss Vale line.