The Border Police of New South Wales was a frontier policing body introduced by the New South Wales colonial government with the passing of the Crown Lands Unauthorised Occupation Act 1839. The British colony of New South Wales was expanding rapidly in the late 1830s and the Government was concerned with the illegal occupation of lands and the rights of the Aboriginal people. The Government of New South Wales in 1839 legislated for a new policing body that would control these issues. This force was called the Border Police.