Before 1829, London had no unified police, just a patchwork of parish constables and private watchmen who could barely keep pace with a city rife with theft, riot and violence. Home Secretary Robert Peel changed that, pushing through the Metropolitan Police Act and creating a single force answerable to the Crown rather than local vestries.
Its headquarters took its name from the street behind it, a quiet lane called Great Scotland Yard, and the name stuck long after the force outgrew the building. The new constables, soon nicknamed bobbies and peelers after their founder, were unarmed, uniformed and deeply distrusted at first by a public wary of state surveillance. Within decades Scotland Yard would become the model for modern policing worldwide, and its name a byword for criminal investigation itself.
