The Thames Barge Driving Race under oars' or "sweeps" and ride tidal river currents alone, up river. The event commemorates the skills of lightermen who moved freight this way along the Thames up until the 1930s and in a wider context it encourages ongoing interest in moving cargo via water and as a way to recruit younger people back into river trades.The teams are normally made up of employees of Thames Lighterage companies, Port of London Authority or are sponsored by local businesses. The best places to view the race are Tower Bridge, London Bridge and Westminster Bridge. During the 1970s Britain suffered a major
Port of London centuries it was the busiest port in the world, with wharves extending continuously along the Thames for , and over 1,500 cranes handling 60,000 ships per year. In World War II it was a prime target for the Luftwaffe during The Blitz. The first evidence of a reasonable sized trading in London can be seen during Roman control of Britain, at which time the Romans built the original harbour. The construction involved expanding the waterfront using wooden frames filled with dirt. Once these were in place the wharf was built in four stages moving downstream from the London Bridge (Brigham).