The Metropolitan Police Act, passed by Parliament in London under Home Secretary Robert Peel, established the Metropolitan Police Service headquartered at Scotland Yard in Westminster. For the first time, London had a professional, uniformed, salaried police force tasked with crime prevention and investigation. The new institution gradually developed criminal investigation departments and evidence-gathering procedures that became models for urban police forces throughout Britain and across the British Empire.

The founding of Scotland Yard transformed literary culture by creating an institutional backdrop for the detective fiction explosion of the Victorian era. Dickens, Wilkie Collins, and later Conan Doyle all wrote against and around Scotland Yard as an institution — sometimes lauding it, sometimes satirising its limitations compared to the brilliant amateur detective. The tension between institutional police and individual genius became a defining structural feature of English crime fiction.