Did the losses of HMS Sheffield and Atlantic Conveyor cause the Royal Navy to begin shooting down anti-ship missiles?
Short answerNo. Missile interception was already part of Royal Navy doctrine, and Sea Dart and Sea Wolf were in service before the war.
NotesThe Royal Navy had not relied only on electronic countermeasures before 1982. Sea Dart and especially Sea Wolf were already intended to engage incoming missiles and had entered service before the conflict. The Falklands supplied hard operational evidence about how those layers performed, but it did not invent missile-on-missile defense. This distinction matters when separating a war's genuinely new lessons from capabilities already under development.