The borough corporation was reformed under the provisions of Municipal Corporations Act 1835. Leeds Borough Police force was formed in 1836, and Leeds Town Hall was completed by the corporation in 1858. In 1866, Leeds and each of the other townships in the borough became civil parishes. The borough became a county borough in 1889, giving it independence from the newly formed West Riding County Council and it gained city status in 1893. In 1904 the Leeds parish absorbed Beeston, Chapel Allerton, Farnley, Headingley cum Burley and Potternewton from within the borough. In the twentieth century the county borough initiated a series of significant territorial expansions, growing from in 1911 to in 1961. In 1912 the parish and county borough of Leeds absorbed Leeds Rural District, consisting of the parishes of Roundhay and Seacroft; and Shadwell, which had been part of Wetherby Rural District. On 1 April 1925, the parish of Leeds was expanded to cover the whole borough.