Hi Ash, your location sounds like you have access to both the Chester Holyhead line and the Cambrian.
Locomotive recognition is initially down to body shell design, but to add to the confusion many class upgrades use the same body shells.
You mention 37s, these are quite recognisable from both shape and engine sound but may be confused with the 40s.
However it's all down to experience when it comes to locomotive identification.
Enjoy the forum and feel free to ask any other railway questions.
Last edited by Master Cutler; 27th January 2021 at 12:55.
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