The River Thames: Then & Now

Documentary exploring the history of the river, and how it has played a pivotal role in London's development as a major centre for international trade. This episode focuses on the capital's docklands, which at their peak, employed more than 30,000 workers. A boat captain whose family have hauled cargo along the river for six generations recalls his grandfather's unique talents. Plus, a look at the construction of bridges, sewers, and the flood barrier.