One that kind of annoys me but it shouldn't really but seemingly perfectly grown up, functioning people that clearly don't go on trains much who are anxious and keep asking passengers what station they need to get off at, asking the conductor what connection from what platform etc etc. with the...
Groups of teenagers talking loudly about how drunk they were last night/how drunk they are going to get/"crazy" things they've done in order to try and impress the carriage.
Family groups off to Butlins that take half the carriage and treat it like their council house.
People that decide they...