Why Royal Navy cruisers retained torpedoes

What would make the Royal Navy follow the US Navy and omit torpedoes from its cruisers?

Very little: British designers regarded torpedoes as essential cruiser weapons across multiple generations of ships.

Abandoning cruiser torpedoes would have required a major institutional reversal in the Royal Navy. Their persistence runs from the Danae, Fiji, and Minotaur concepts through the planned Tiger and Neptune designs. British designers treated torpedoes as an integral part of cruiser armament.