Join two of London's foremost lost river fanatics as they delve into the hidden histories of London's streams - waterways now underground that have left traces on the landscape, in the street names, in the sewer system, and in the capital's psyche. 

As a poet, Tom Chivers walks the unexpected path in his 'urban pilgrimages' down the courses of the Walbrook and Neckinger rivers, uncovering startling stories of playwrights, holy wells, asylums, suicidal bankers and peat bogs in the city. 

Tom Bolton has traced lost London rivers through the modern streetscape and written a book about what he found, from the Victorian river rookeries to a liquorice field full of bones and the oldest Londoners of all.