Not a name you would normally associate with a railway theme, but all will become clear (I hope).
The loco on this label is restored No: 46115, Scots Guardsman, built in 1927 by the LMS for use on express services between London & Scotland. It was withdrawn by BR in 1965, having appeared in the GPO film, Night Mail and David Lean’s classic film, Close Encounter. Now owned & operated by the West Coast Railway Company & based at their Carnforth depot in Lancashire. Often used nowadays to haul ‘specials’ across the mainline rail network.
Gravy Train Catering Company commissioned this special ale from the Southport Brewery and hence the very appropriate name.