Thanks Harbornite, I have had a look at realtimetrains and it will be really useful, even if only for the passenger trains. It means I can spot away from the station and still know which train is which etc It'll be really useful. I see on the realtraintimes android app "read more" section that they plan to add live details for freighters and other non-passenger stuff in a future update, so I shall look out for that.