The Tenant Services Authority (TSA) was the operating name of the Office for Tenants and Social Landlords, the former regulatory agency of registered providers of social housing in England. On 1 December 2008 the TSA first took over the regulatory work of the Housing Corporation, inspecting housing associations and responding to concerns. Its remit was then expanded to regulate local authority housing, ALMOs and housing cooperatives from April 2010, almost 1,800 providers.