New research has identified the most overcrowded commuter train services in Britain, revealing that thousands of passengers are regularly left standing during peak morning and evening journeys. The findings highlight ongoing capacity problems on key commuter routes into major cities, raising fresh concerns about passenger comfort and safety as rail operators struggle to keep pace with demand at rush hour.

The data shows certain services running significantly over their intended capacity, with some trains carrying far more passengers than there are seats available, forcing large numbers to stand for much or all of their journey. The overcrowding is most pronounced on routes serving major commuter hubs, underscoring long-standing criticism of rail infrastructure and capacity planning across the network, particularly as passenger numbers on some lines continue to grow faster than services can be expanded.