Percy Takes the Plunge - S2-E11
Corrected entry: Henry says "This shed is for the Fat Controller's Engines!" to Bill and Ben, but they ARE the Fat Controller's engines.
Percy Takes the Plunge - S2-E11
Corrected entry: Percy tells Bill and Ben about the events of "Percy's Promise" but that is a Season 3 episode.
Correction: Percy may have been referring to a different incident that we didn't see. It's true that Percy from the original book was referring to the incident from Percy's Promise, but this show is a different continuity, and "braving bad weather to help Thomas" is vague enough to refer to any incident with bad weather.
Correction: Bill and Ben were not owned by the Fat Controller.