The Standard Motor Company was involved in the production of the Ferguson tractor between 1945 and 1959. To preserve its interest in tractor production when the Ferguson manufacturing process was sold to Massey-Harris-Ferguson, Standard Motor Company set up a tractor company of its own and produced a number of prototypes (two of which apparently survive) designed around the Standard diesel engine. After Standard joined Leyland in 1960, the Tractor Company was put into voluntary liquidation (resolution of 9 November 1960).
Reference: M. Williams, Massey-Ferguson tractors (1987, reprinted 1989).
From the guide to the Papers of the Standard Tractor Company, 1959-1963, (Modern Records Centre, University of Warwick Library)