Follow the working lives of the trains and staff of First Great Western, one of Britain's largest and most unique train companies.

Delve behind the scenes to capture the inside story of an industry that continues to grow, featuring a team of dedicated drivers, managers, ticket inspectors, technicians and rolling stock that connect the capital to the far South West. OVERGROUND 2 is the next chapter in the fascinating THE RAILWAY series, taking us behind the scenes of First Great Western - one of Britain's largest train operators.