In this episode of The Water Road we reach Foxton Locks, where we have quite a wait to get down Britain's longest flight of staircase locks. A volunteer lock keeper tells us why it's so important to operate the paddles in the right order, and gongoozlers tell us why they decided to visit the site. Plus we hear about the history of the inclined plane boat lift, which replaced the locks for a while early last century -- and why it proved a failure.

The Water Road is produced and presented by Adam Porter.