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Central's team is always adapting to modern times, and the ongoing electrification of the railways is a big part of that mission.

Out on the tracks, the engineering team are racing to erect a huge new structure, while one of the rail network's ecologists is monitoring how the work is affecting local wildlife. Meanwhile, station tour guide Paul explores the history of Glasgow's tram network, and on the West Coast Mainline, the Avanti team are going all-out in an attempt to break a long-standing speed record.