Would an earlier victory prevent the Daring-class destroyers?

If Japan or Italy left the war earlier, would Britain still build postwar destroyers such as the Daring class?

Probably yes for the Darings, because they followed the fleet-destroyer lineage, though fewer Battle-class ships might be completed.

A shorter war would change fleet wear and might reduce some late-war production, but it would not erase every advanced destroyer design. The Battle class answered wartime emergency requirements, while the Daring class continued the Tribal fleet-destroyer concept. That lineage makes some form of Daring likely even in the alternate timeline. The number of Battle-class ships completed is more sensitive to an earlier end to the conflict.