Sir Albert Stern, head of the Tank Supply Depot in World War I, was asked to form a committee, to address future tank designs, in July 1939. Other members of the committee were Sir E. Tennyson d'Eyncourt, General Swinton, Mr. Ricardo, and Major Wilson. They proposed that a heavy tank be designed and approached Sir William Tritton of Foster's of Lincoln to design it.
Members of the design team (The Old Gang) were: Stern, Wilson, Swinton, d'Eyncourt, Ricardo, Symes, and Tritton.
The TOG was designed to cross wide trenches.
The turret was designed by Stothert & Pitt of Bath.
With the Churchill's success, interest in the tank declined.