Sir John Black's interest in a sporting brand was sparked by the fact that SS Jaguar already used Standard engines and components. When the bombed out and bankrupt Triumph Motor business came up for sale after the war Black had to have it, and beat off St William Lyons. Black pulled out the 1776cc ohv engine off the shelf to power what would become the Renown and the Roadster models. A tubular steel chassis was constructed which could easily be adapted to the shorter Roadster or the longer Renown (and even longer Renown limousine). For the Saloon Black went to Mulliners Ltd of Bordesley Green, Birmingham, from whom he had purchased a special build SS Jaguar limousine in 1939. Mulliner's own Leslie Moore did most of the styling and engineering of the saloon which was built in traditional wooden frame with alloy panels. The final design, however, owes much to Triumph's own designer Walter Belgrove who insisted on changes. Nevertheless the similarity to the Alvis TA14 saloon also built by Mulliners is obvious. The Triumph 1800 'Town and Country Saloon' was launched in March 1946 along with the 1800 Roadster. After 4000 saloons had been sold a new TDA 2000 model was launched with the new 2088cc Standard Vanguard engine, and 2000 were sold. In October 1949 Triumph gave the Saloon the pressed steel chassis of the Standard Vanguard, with coil spring front suspension and it was named the Triumph TDB Renown. For one year a 3inch longer Pullman limousine was available, but in 1952 The TDC Renown MkII with larger rear window inherited the longer 111-inch chassis and sold until 1954 with 2,800 going out of the gates.