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Unlawful Sexual Intercourse (SOA 1956)


Code for Crown Prosecutors - Considerations

The public interest requires the prosecution of an offence of unlawful sexual intercourse with a girl under 13 unless exceptional circumstances exist.

You may exercise considerable discretion in relation to offences under Section 6 of the Act.

The age of the defendant will be highly relevant. Even if the defendant is over 24, a prosecution may not be in the public interest if he had reasonable cause for believing that the girl was over 16.

The following factors will also be relevant:

  • the relevant ages of the parties;
  • the emotional maturity of the girl and whether she entered into a sexual relationship willingly;
  • the relationship between the parties and whether there was an existence of a duty of care or breach of trust <refer to Sexual Offences - Abuse of Trust, elsewhere in this guidance>.

In summary, a man who is considerably older that the girl is likely to be prosecuted, especially if he owed her a duty of care; whereas it may not be necessary to prosecute a young man with whom the girl has been having a consensual relationship.

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The Law

Definition of unlawful sexual intercourse

  • by a man with a girl under 13, Section 5 Sexual Offences Act 1956, (Archbold 20-63 and Archbold 20-64).
  • by a man with a girl under 16, Section 6 Sexual Offences Act 1956, (Archbold 20-74).

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Time limits

A prosecution for an offence committed under Section 6 (or an attempt to commit that offence) must be commenced within 12 months of the alleged offence.

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Mistake as to age

Mistake as to the girl's age is not a defence other than the very limited defence provided by Section 6(3) ("the young man's defence") in relation to girls under 16 (Archbold 20-87.)

R v K [2001] 3 WLR 471, HL, which examined the offence of indecent assault, did not extend the defence of mistake as to age to the offence of unlawful sexual intercourse (Archbold 20-70).

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Registration of sex offenders

Part 1 of the Sex Offenders Act 1997 applies to the Section 5 offence. It also applies to the Section 6 offence but not where the offender was under 20 (Archbold 20-271j).

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Charging Practice

A charge of unlawful sexual intercourse will normally be appropriate if a girl consents in fact to intercourse but she is under the statutory ages in Sections 5 and 6 of the Sexual Offences Act 1956.

The legislation is to provide protection for young girls. An underage female cannot be prosecuted as an accessory to the offence committed by a male who has unlawful intercourse with her (R v Tyrrell 1894 1 Q.B. 710).

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Specimen charges

For guidance <Refer to Sexual Offences - Rape: specimen charges and Drafting the Indictment: Specimen Charges, both elsewhere in this guidance>.

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Joinder

For guidance <Refer to Sexual Offences - Rape: Joinder and Drafting the Indictment: Joinder, both elsewhere in this guidance>.

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Proof of age

It is for the prosecution to prove that the girl was under the relevant age. A certified copy of the birth certificate accompanied with evidence of identity is one way of proving age (Archbold 20-73).

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Character of victim - previous sexual history

Section 41 of the Youth Justice & Criminal Evidence Act 1999 applies to these offences. <refer to Sexual Offences - Rape: Character of Victim - Previous Sexual History and R v A - Sexual Offences - Rape: Complainant's Sexual History, in this guidance>.

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Useful links

Archbold 20-63
Archbold 20-64
Archbold 20-74
Archbold 20-87
Archbold 20-70

R.v. K [2001] 3 WLR 471,HL
Archbold 20-271j
R.v. Tyrrell 1894 1 QB 710
Archbold 20-73
v1.1

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