Siddeley was knighted in 1932 when he served as High Sheriff of Warwickshire. Sir John Siddeley was elected president of the Society of Motor Manufacturers and Traders for 1937–1938[9] – the highest honour the British Motor Industry could bestow.[2] That same year he was raised to the peerage as Baron Kenilworth, of Kenilworth in the County of Warwick.[10][11] He was also elected president of the Society of British Aircraft Constructors for 1932–1933[12]—now Society of British Aerospace Companies— and elected president of the Engineering and Allied Employers' National Federation for 1935–1936.[13]