Downstream is a celebration of rivers: an exploration of what they mean to us and in turn, what we owe to them. Travelling partly on foot and bicycle, but chiefly in a plywood, fifteen-foot punt, Tom Fort followed the course of Britain's third largest - and one of our least known - the River Trent, from source to the sea. Journeying through the unsung heart of Middle England, his journey showed him the unseen face of his own country, all the while teaching him about the land and moving water, its mysteries and magic.