Britain benefited from the story that it hated submarines

Who promoted the idea that Britain hated submarine warfare after the First World War?

Britain is strongly implied because the reputation helped its treaty diplomacy.

Britain is the implied source of the story because the reputation helped its negotiating position in naval treaties. No individual originator is identified. Describing the British as gentlemen could encourage others to underestimate their willingness to fight ruthlessly. In this interpretation, peacetime civility was compatible with doing what was necessary to secure favorable peace terms.