The most reliable source is the 20th Anniversary Edition DVD or the 2017 Blu-Ray set. Both include professional closed captions (CC) that are verified by BBC Studios. However, note that regional versions (Region 1 vs. Region 2) sometimes have minor wording differences—for instance, “lorry” vs. “truck” appears in some UK versions, though rarely.
Non-verified subtitles—often generated by AI or ripped from inferior sources—commit three cardinal errors: