London's new Metropolitan Police walked their first beat
On this day · 29 September 1829
Robert Peel's blue-coated constables stepped onto London's streets, inventing the template for modern professional policing.
On September 29, 1829, the first officers of London’s Metropolitan Police walked out onto the city’s streets, launching what is widely called the first modern professional police force. Dressed in blue tailcoats and top hats to look like civilians rather than soldiers, they were the creation of Home Secretary Sir Robert Peel.
The new force was deliberately unarmed beyond a wooden truncheon and a rattle, and tasked with preventing crime rather than merely punishing it. The initial roster ran to roughly 1,000 men—constables, sergeants, inspectors, and superintendents—patrolling within about seven miles of Charing Cross.
Police constables were called ‘bobbies’ or ‘peelers’ in reference to Peel.
Not everyone welcomed them; some Londoners saw an organized force as a threat to liberty. But the model stuck. Peel’s principles—policing by consent, restraint, and accountability to the public—spread across Britain and then the world, and his nicknames outlived him: officers are still affectionately called bobbies nearly two centuries later.
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