“Self-defence requires honest belief in necessity, reasonableness affects credibility not liability.”
Beckford, a police officer in Jamaica, shot and killed a suspect during an armed operation. He claimed he believed the suspect was about to shoot him. The prosecution argued his belief was unreasonable and therefore invalid as a defence.
Whether self-defence requires the defendant's belief in the need for defensive action to be both honest and reasonable, or whether honest belief alone suffices.
The Privy Council allowed the appeal. Self-defence requires only that the defendant honestly believed defensive action was necessary; the reasonableness of that belief goes to credibility, not to the legal test.
This case established the definitive subjective test for self-defence in UK law, clarifying that defendants are judged on their honest perception of danger rather than objective reasonableness. It remains the leading authority on mistaken belief in self-defence cases.
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OSCOLA Citation
R v Beckford [1988] AC 130 (PC)
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