There's a mudcat thread about it, with the words - try Lyr Req: Willie Lee: 'I am a railway porter....'

It put me in mind another one Change at Thorpe-le-Soken for Walton-on-the-Naze I heard at the late lamented Walton Folk Festival.

The general colour of train songs from over here tends mostly to be self mockery tinged with nostalgia.