Tom Bolton, author of London's Lost Rivers: A Walker's Guide, leads a walk along the full length of the River Peck, from Honor Oak Park to the Thames at South Dock. The lost River Peck is Peckham's river, buried under south east London. It sweeps from One Tree Hill across Peckham Rye and the industrial backlands to the Surrey Docks. On the way it takes in parts of London few ever visit, well off any tourist trail.