Iain Sinclair’s latest book sees Hackney’s favourite psychogeographer walk the length of the London Overground to get acquainted with a version of the city about which he knew nothing
19th-century Romantic writer John Clare once walked from an Epping Forest asylum to Northamptonshire without food or money. Andrew Kötting and author Iain Sinclair have made a documentary about it, starring Toby Jones and a straw bear