Royal Navy cruiser designs worth reconsidering

Which unbuilt or abandoned Royal Navy cruiser ideas might have been worth pursuing?

Promising options included workable quadruple turrets for Edinburgh and Belfast, 9.2-inch heavy cruisers, and an enlarged Dido-style ship on a Town-class hull.

The proposed quadruple turrets for Edinburgh and Belfast are the first option, provided their mechanical problems could be solved. Royal Navy heavy cruisers armed with 9.2-inch guns are another attractive possibility. A third example is a Dido-like anti-aircraft cruiser on a Town-class hull with more 5.25-inch twin mounts. Together the examples show how armament layout, hull size and mechanical risk constrained otherwise attractive cruiser concepts.