I'm afraid I can't help with the 'Big Yin's' songs, but here's the Railway Porter -

       G                          D7
  Oh I am a railway Porter and ma name is Willie Wee
                                        G
  Am the maist important fella ye could ever hope tae see
           C                                 G                Em
  When the train draws in the station ye can hear me loud and clear
         G                         D7     G
  For ma duty is tell ye ye've tae change here
  G  D      D7  G                                  D7
  Ye change for Auchtermuchter, cuddle ma dochter, Crieff or 
                                                 G               G7
  Cullercoats, Fife or John O' Groats, Beecham's pills or Quaker oats,
             C                          G                 Em
  Change for Ecclefechan, Aiberdeen and a' the stations in atween,
    G                            D7 G
  Unless ye want tae gang tae Tobermory

Hope this works for you!

Jack Beck