Quick answer
Internationally trained pharmacists need Grade B (350) in each of the four OET sub-tests for GPhC (UK), PBA (Australia, via AHPRA), and PSI (Ireland) registration. No Grade C+ concession applies. The most distinctive OET challenge for pharmacists is the counselling letter — written to a patient, not a clinician — requiring full register shift away from pharmacological terminology. Most marks are lost on Genre & Style.