<Li> 1839: First county police force created, in Wiltshire . </Li> <Li> 1840: County Police Act 1840 passed . </Li> <Li> 1842: Within the Metropolitan Police a detective department was founded . </Li> <Li> 1856: County and Borough Police Act 1856 made county and borough police forces compulsory in England and Wales and subject to central inspection . By then around thirty counties had voluntarily created police forces . </Li>

When did the police force start in britain