The Advanced Steam Traction Group (AST Group) was established in 2012 following the closure of the 5AT Project.

The Group seeks to promote the ongoing development of steam traction with the aim of prolonging steam operation of both main-line and heritage line workings for the benefit of present and future generations.

Membership of the group is open to all. Please contact if you are interested in joining.

Find out more about the AST Group and its aims, its 5AT legacy, and about “Modern Steam” technology, through the pages of this website.


Revolution Project

Our principal project just now is the design and construction of a revolutionary new locomotive to be appropriately named “Revolution”.  It is being built in miniature scale (10¼” gauge) as a low-cost demonstrator of new and developing ideas.  See the Revolution page for more information.