Was the Bismarck-strike Swordfish built by Fairey or Blackburn?

Was the Swordfish that delivered the decisive torpedo hit on Bismarck built by Fairey or Blackburn?

Tentatively, it may have been Blackburn-built, though the exchange does not document the attribution.

An audience member asks whether the Swordfish that delivered the decisive torpedo strike on Bismarck came from Fairey or Blackburn production. The tentative answer is that it was probably a Blackburn-built aircraft. The brief exchange gives no airframe serial or documentary citation. The watch point therefore illustrates the distinction between designer and manufacturer while preserving the spoken answer as a cautious attribution rather than settled proof.