 With the onset of the Industrial Revolution the agricultural nature of Longley became threatened as the farms found it harder to be profitable and the expanding industry of Sheffield came ever closer.In the early part of the 20th century Longley became within the boundary of the City of Sheffield and was earmarked as a site for a council housing estate and the rural life disappeared altogether.The Longley area had a number of large country houses before it became part of Sheffield, most of these have now been demolished.