Only Anson and Howe retained a theoretical redesign window

Could later King George V-class battleships be redesigned for 16-inch guns after the treaty system collapsed?

Only Anson and Howe were theoretically early enough for such a change; the other ships were too far advanced.

The collapse of treaty restraint could only reopen the King George V design for heavier guns while construction remained at an early stage. Most of the class had advanced too far. Only Anson and Howe were theoretical candidates because they were less far along. This was a possible design window, while the practicality and likelihood of a 16-inch conversion remained unresolved.