The Assured Shorthold Tenancy is the default legal category of residential tenancy in England and Wales. It is a form of assured tenancy with limited security of tenure, which was introduced by the Housing Act 1988 and saw an important default provision and a widening of its definition made by the Housing Act 1996. Since 28 February 1997 in respect of accommodation to new tenants who are new to their landlords, the assured shorthold tenancy has become the most common form of arrangement that involves a private residential landlord. The equivalent in Scotland is short assured tenancy.