Fast battleships would follow the Revenge class

Would Britain build more battlecruisers after the Revenge and Queen Elizabeth classes?

The more likely next step was fast battleships, combining the battlecruiser's speed with stronger battleship protection.

Once the Queen Elizabeth and Revenge classes had established the 15-inch gun fleet, the next British capital ships would likely combine heavier protection with battlecruiser speed. That direction points toward fast battleships rather than another separate generation of lightly protected battlecruisers. Existing battlecruisers would continue to supply speed while new construction closed the gap between the two categories. The answer treats the mature fast battleship as the likely successor to both lines of development.