- County class heavy cruiser; Kent subclass
- modernized 1936 along with HMS Cumberland; her aft superstructure cut down and replaced with a large 2-aircraft hangar and fixed athwartships catapult. Their hulls were cut down by one deck aft of "Y" turret to save weight.
https://en.wikipedia.org/wiki/HMS_Suffolk_(55)
https://en.wikipedia.org/wiki/HMS_Cumberland_(57)
https://en.wikipedia.org/wiki/County-class_cruiser#Kent_class