How long the Royal Navy refined the Taranto plan

Had Lumley Lister planned a Taranto-style attack while serving in HMS Glorious?

Yes. He developed the plan during the Abyssinia Crisis, and the Royal Navy updated it nearly every year from 1935 onward.

Lumley Lister worked up an important version of the plan while serving in Glorious during the Abyssinia Crisis. This built on the Royal Navy's standing interest in attacking enemy ships inside harbours. From 1935 onward, the Taranto plan was updated almost every year to reflect changes at the base and in available capabilities. The final operation grew from institutional continuity and repeated revision.