London Labour and the London Poor is a work of Victorian journalism by Henry Mayhew. In the 1840s, he observed, documented and described the state of working people in London for a series of articles in a newspaper, the Morning Chronicle, which were later compiled into book form.
Mayhew went into deep, almost forensic detail concerning the trades, habits, religion and domestic arrangements of the thousands of people working in London. Much of the material includes detailed interviews in which people candidly describe their lives and work. For instance, Jack Black talks about his job as "rat and mole destroyer to Her Majesty" and remains in good humour despite his experience of a succession of near-fatal infections from bites.