Renowned for their quality and reliability, these powerful engines could be found at power stations, gas works, collieries, quarries, engineering works and many other industrial locations all over Britain. A considerable number were also built for export, especially to Commonwealth countries.
 
The design was in production for many years and the kit includes alternative parts  - smokebox front, sandboxes and buffers - for locos built, or shopped, during the period of transition from Hawthorn Leslie to RSH. You can also mix 'n' match the components to produce a typically hybrid 'bitzer'. The study of photographs is recommended to clarify specific points of detail on particular locomotives.