The Austin Westminster was a family of cars first introduced in 1954. The Westminster was a range of sedans and estates that went through numerous evolutions over the course of its production. Initially, the Westminster was introduced as the A90 Six Westminster (although these cars share the A90 designation as featured on the Austin A90 Atlantic, it is a separate model), but as it evolved, it used A95, A99, A105, and A110 designations. During this era, Austin used the letter A followed by a horsepower rating (usually rounded up). Production of the Austin Westminster lasted until 1968, when the model was discontinued.