Comparing: FV215b vs. T57 Heavy Tank

Proposed plan for a heavy tank on the basis of the Conqueror Mk. II. Unlike the production model, this modification featured rear placement of the fighting compartment. No prototypes were manufactured.

A project of a heavy tank with an oscillating turret and automatic loading. Developed from 1951. Experimental turrets for 120 mm and 155 mm guns were manufactured by 1957. However, the project was deemed unsuccessful and development was discontinued.