What is the British variant of an American M3 Lee tank?

The M3 Lee was an American medium tank used during World War II. In Britain, the tank was called by two names based on the turret configuration and crew size. Tanks employing US pattern turrets were called the "Lee", named after Confederate general Robert E. Lee. Variants using British pattern turrets were known as "Grant," named after Union general Ulysses S. Grant.