The first years of the thirties were a period of economic downturn and the motor industry slowed dramatically. Armstrong Siddeley cars were designed with the professional classes in mind and with steady refinement continued to concentrate on this sector of the market.

 

The introduction of the Armstrong Siddeley self-changing gear at this time doubtless opened up new opportunities for those who had been reluctant to drive themselves and the ease of driving was also cleverly promoted to 'The Daughters of Gentlemen'.

With participation in runs, competitions, rallies, good  advertising and publicity, Armstrong Siddeley remained strong. 

 

In 1933 John Siddeley chose to launch the Siddeley Special, a luxury car probably more discussed in 'Siddeley' circles than any other. Only 253 were made and a few are still on the road today.  By 1935 John Siddeley again caused a stir when approaching 70 years of age he sold his company to The Hawker Aircraft Co.

 

The new Hawker Siddeley Aircraft Co. continued to develop the car section of the business with the introduction of the 17HP and a 20 -25HP which took on the mantle of the Special Six. The body styles were becoming less formal and more in keeping with the changing tastes of the time. Another new design was launched in October 1938 in the shape of the 16HP saloon. Pending hostilities cut the production of cars short as a return to War production closed the era.