>>1544204Use the train numbers to identify classes. Locomotives have five digit numbers, multiple units have six digit numbers. The first two digits (if it is a locomotive) or first three digits (if it is a multiple unit) are the class. For example the train in pic related carries the number 150111 which tells you that it is a class 150. Many classes have subclasses which aren't always immediately obvious, but if you go to the wikipedia page for a given class it will probably list the number ranges of each subclass, assuming it has any.
This wikipedia article will give you a bit more detail;
https://en.wikipedia.org/wiki/British_Rail_locomotive_and_multiple_unit_numbering_and_classification#1973_numbering_and_classification_-_TOPSSteam locomotives aren't as easy to identify if you don't already know much about them, but if there is a steam special at the station you're working at just google the number and name (if it has one) along with steam locomotive (e.g. "4003 Lode Star steam locomotive" for OP pic) and you'll get your answer.
