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Antoine, R v.
Factual and Procedural Background
In December 1995, The Victim, aged 15, was killed in The City by two youths: the present Appellant (aged 16) and a Co-Defendant (aged 17). The Co-Defendant repeatedly stabbed The Victim while the Appellant prevented escape and struck the victim. Both were indicted for murder; an additional manslaughter count was later added.
The Co-Defendant pleaded guilty to manslaughter on the basis of diminished responsibility and received an indefinite hospital order. The Appellant was assessed before Judge van der Werff and, on 18 March 1997, a jury found him unfit to plead owing to paranoid schizophrenia. By statute, the trial halted and a second jury was empanelled under section 4A(2) of the Criminal Procedure (Insanity) Act 1964 to decide whether the Appellant “did the act” charged.
Prior to that enquiry, defence counsel sought permission to raise diminished responsibility. The trial judge, following Regina v. Egan, ruled against the request and further held that the prosecution must nonetheless prove both actus reus and mens rea. The second jury found that the Appellant had done the act of murder, and a restrictive hospital order of indefinite duration was imposed.
The Court of Appeal (Criminal Division) upheld the ruling, led by Judge Bingham C.J., and certified a point of law of general public importance. The present appeal reached the House of Lords, where Judge Hutton delivered the leading opinion; four other Law Lords concurred.
Legal Issues Presented
- Whether, at a post-unfitness hearing under section 4A(2) of the Criminal Procedure (Insanity) Act 1964, an accused may invoke section 2 of the Homicide Act 1957 and rely on the defence of diminished responsibility.
- Whether, when determining under section 4A(2) whether the accused “did the act charged,” the jury must be satisfied of mens rea as well as actus reus.
Arguments of the Parties
Appellant's Arguments
- The phrase “did the act” in section 4A(2) incorporates the mental element; therefore diminished responsibility, which directly affects mental capacity, is available.
- If diminished responsibility were accepted, the jury could return a manslaughter finding, avoiding an automatic indefinite restriction order.
- An anomaly is tolerable and could be addressed in practice by charging manslaughter where appropriate.
- Consistent with Regina v. Egan, the prosecution should be required to prove mens rea; otherwise an unfit but innocent accused risks detention.
Respondent's Arguments
- Section 2 of the Homicide Act 1957 applies only where the accused is liable to conviction for murder; once unfitness is found, no conviction is possible, so the defence cannot arise.
- The statutory wording “did the act” was intentionally chosen to exclude mens rea; the jury’s task is confined to actus reus, mirroring earlier insanity legislation.
- Adopting the Appellant’s construction would permit dangerous individuals to be acquitted and released, a result Parliament could not have intended.
- Attorney-General’s Reference (No. 3 of 1998) demonstrates that mens rea is irrelevant once insanity is assumed; Regina v. Egan is wrong and should not be followed.
Table of Precedents Cited
| Precedent | Rule or Principle Cited For | Application by the Court |
|---|---|---|
| Regina v. Egan [1998] 1 Cr App R 121 | Held that the Crown must prove both actus reus and mens rea at a section 4A(2) hearing. | Distinguished and expressly disapproved; deemed inconsistent with statutory history and overruled. |
| Attorney-General’s Reference (No. 3 of 1998) [1999] 3 WLR 1194 | Actus reus alone suffices for “did the act” where insanity is assumed; mens rea unnecessary. | Adopted as correct statement of the law and followed. |
| R v Cox [1968] 1 WLR 308 | Plea to manslaughter by diminished responsibility may be accepted without full murder trial. | Cited to contrast situations where the accused remains liable to conviction with the present unfitness procedure. |
| R v Ghosh [1982] QB 1053 | Two-step test for dishonesty. | Mentioned in discussion of Egan; court noted no Ghosh direction was required there. |
| Felstead v. The King [1914] AC 534 | Insanity negates mens rea. | Quoted to support view that, once insanity is established, intention is irrelevant. |
| Director of Public Prosecutions for Northern Ireland v. Lynch [1975] AC 653 | Defined actus reus and mens rea terminology. | Used to illustrate conceptual separation between physical and mental elements. |
| R v Sullivan [1984] AC 156 | Insanity under either limb of the McNaghten Rules removes criminal responsibility. | Relied upon to show that insanity negates mental responsibility regardless of specific intent. |
| Palmer v. The Queen [1971] AC 814 | Self-defence requires honest and instinctive belief in necessity. | Cited as example when discussing how accident, mistake or self-defence may still be raised on objective evidence. |
| McNaghten’s Case (1843) 10 Cl & F 200 | Two-limb test for insanity: (i) nature and quality of act; (ii) knowledge of wrongfulness. | Formed backdrop for discussion of how either limb negates mental responsibility. |
Court's Reasoning and Analysis
1. Statutory construction of section 2 Homicide Act 1957
That defence applies only where, “but for” section 2, the accused would be liable to conviction for murder. Because a finding of unfitness stops a trial, no conviction for murder is possible; hence diminished responsibility cannot arise during a section 4A procedure.
2. Meaning of “did the act” in section 4A(2)
Historical comparison showed Parliament deliberately replaced “committed the offence” (Act 1800) with “did the act” (Act 1883). This linguistic shift indicates intent rather than offence. The House therefore accepted Attorney-General’s Reference (No. 3 of 1998) that only actus reus must be proved; mens rea is irrelevant once insanity is established.
3. Public-protection rationale
Requiring proof of mens rea would allow insane defendants who performed dangerous acts to be acquitted and released, posing unacceptable risk. Parliament cannot be taken to have intended such an outcome.
4. Treatment of potential defences on section 4A determination
Where objective evidence raises accident, mistake, self-defence or involuntariness, the jury must consider those matters and acquit unless the prosecution disproves them beyond reasonable doubt. Mere speculative suggestions by counsel are insufficient.
5. Overruling of Egan
The Court labelled Egan “per incuriam” because the Crown conceded the key point and statutory history was not analysed. That authority is no longer to be followed.
Holding and Implications
APPEAL DISMISSED.
The House answered both the certified question and the broader question in the negative: (i) diminished responsibility cannot be raised at a section 4A(2) hearing; (ii) the jury need only be satisfied of actus reus, not mens rea. The decision clarifies the scope of post-unfitness proceedings, overrules Egan, and aligns the English position with Scottish procedure. No new cause of action is created, but the ruling removes ambiguity and averts potential public-safety anomalies.
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