B v. Director of Public Prosecutions

Factual and Procedural Background

The Appellant, then aged 15, sat beside a 13-year-old girl on a bus in The City and repeatedly asked her to perform oral sex. He was charged in the Youth Court with inciting a child under 14 to commit an act of gross indecency, contrary to section 1(1) of the Indecency with Children Act 1960 (“the 1960 Act”). The Youth Court ruled that the offence was one of strict liability as to the victim’s age; the Appellant changed his plea to guilty and received an 18-month supervision order. On appeal by case stated, the Divisional Court (Judge Brooke LJ, Judge Tucker and Judge Rougier) affirmed the strict-liability ruling. The present appeal to the House of Lords (Judge Nicholls, Judge Steyn, Judge Hutton, Judge Mackay and the Lord Chancellor) followed.

Legal Issues Presented

1. Whether a defendant charged under section 1(1) of the 1960 Act is entitled to be acquitted if he honestly believed that the child was aged 14 or over.
2. If an honest-belief defence exists:
   1. Must the belief be founded on reasonable grounds?
   2. On which party does the burden of proof rest?

Arguments of the Parties

Appellant's Arguments

• The common-law presumption is that mens rea is required unless Parliament clearly displaces it; section 1(1) is silent on mental elements.
• An honest belief, whether reasonable or not, negatives the intention to commit an offence against a child under 14.
• The offence is serious and carries significant stigma; strict liability should not be imposed without express wording.
• The disparate structure of the Sexual Offences Act 1956 (“the 1956 Act”) provides no coherent legislative policy sufficient to rebut the presumption of mens rea.

Respondent's Arguments

• Reading the 1960 Act together with the 1956 Act shows a consistent legislative policy of strict protection for minors, displacing any requirement of mens rea as to age.
• Previous authorities on age-based sexual offences (e.g., Reg v Prince, R v Maughan) establish that mistake as to age is no defence.
• Where Parliament intended a mistake-of-age defence, it said so expressly (e.g., the “young man’s defence” in section 6(3) of the 1956 Act); the absence of such wording in section 1(1) implies strict liability.
• Requiring the prosecution to disprove honest belief would unduly hamper enforcement and jeopardise child protection.

Table of Precedents Cited

Court's Reasoning and Analysis

The House reaffirmed the common-law presumption that Parliament does not intend to criminalise the blameless. Section 1(1) is silent on mental state; therefore the court examined whether strict liability was negatived by necessary implication.

• Seriousness and breadth of the offence: A conviction carries heavy penalties (now up to 10 years) and severe stigma; the subsection covers conduct ranging from predatory paedophilia to consensual teenage experimentation. This militated against imposing strict liability without explicit words.
• Statutory context: The 1956 Act is a “motley collection” of provisions lacking a coherent pattern. Express mistake defences in some sections do not compel an inference of strict liability elsewhere.
• Precedent analysis: Modern authority (Morgan, Kimber, Williams) embraces a subjective test; historic cases such as Prince cannot withstand the contemporary approach to mens rea.
• Policy considerations: Protecting children is vital, but Lim Chin Aik confirms that seriousness of the mischief does not in itself justify strict liability. Effective enforcement concerns are insufficient to override fundamental criminal law principles.
• Resulting standard: The prosecution must prove that the defendant did not honestly believe the child was 14 or over. The belief need not be reasonable; unreasonableness affects only whether the jury accepts that the belief was actually held.

Holding and Implications

APPEAL ALLOWED; CONVICTION QUASHED.

Section 1(1) of the Indecency with Children Act 1960 requires proof that the defendant lacked an honest belief that the child was aged 14 or above. That belief need not be reasonable, and once some evidence of such belief is raised, the prosecution bears the burden of disproving it beyond reasonable doubt.

Implications: The decision re-aligns age-based sexual offences with the general mens rea presumption, casts doubt on the continuing authority of Reg v Prince and similar cases, and may compel Parliament to legislate expressly if it wishes to impose strict liability in this field.