The 6.14am service that runs each Sunday from London Waterloo station to Shepperton rarely carries many passengers. But this weekend, hundreds of rail enthusiasts will board that train, which meanders through the suburbs of southwest London and Surrey.
The reason: it is the first departure from Waterloo under the newly renationalised South Western Railway. The train will also bear the logo of Great British Railways – the organisation that the government plans to create to run almost all rail services in England, Wales and Scotland. So what exactly is changing, and why?