The Alvis TC 21 was a series of luxury cars that were introduced in 1953. The TC 21 was offered in saloon and drophead coupe body styles, which were bodied by Mulliners of Birmingham and Tickford respectively. These cars were powered by a 3.0L inline six engine which generated 100hp which it sent to the rear wheels via a 4 speed manual transmission. A variant known as the TC 21/100, or Grey Lady, featured a range of small improvements which allowed the car to reach 100mph. Production of the TC 21 ended until 1955.