Armstrong-Siddeley was created in 1919 when Armstrong-Whitworth and Siddeley-Deasy teamed up to take the market by storm.
The Coventry-based company created remarkable cars, as well as aircraft and aircraft engines.
The Mountstuarts' choice of vehicle reflects the taste of many wealthy families at the time. During the 1920s, when the car industry was taking off, Armstrong-Siddeley models were very popular.
Nevertheless, Armstrong-Siddeley struggled to survive in an increasingly competitive market and finally stopped making cars in 1960.