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Sexual activity with a child

The offence of sexual activity with a child under s.9 Sexual Offences Act 2003 — the statutory elements (points to prove) reproduced verbatim, mode of trial and maximum sentence, and the arrest power, for frontline officers.

Unofficial independent resource — always verify with official sources (College of Policing, your force, PFEW).

Last reviewed: 28 August 2026 · Next review due: 28 February 2027

Reviewed by BlueLineHub Editorial

What are the points to prove for sexual activity with a child under s.9 Sexual Offences Act 2003?

Sexual activity with a child (s.9(1) Sexual Offences Act 2003) requires: (1) A, aged 18 or over, intentionally touches another person, (2) the touching is sexual (s.78), and (3) either the other person is under 16 and A does not reasonably believe they are 16 or over, or the other person is under 13, reproduced verbatim below.

The maximum sentence on indictment is 14 years' imprisonment for both forms of the offence. Only the mode of trial differs: where the touching involved penetration (s.9(2)) the offence is indictable only; otherwise (s.9(3)) it is triable either way, with a maximum of 6 months on summary conviction.

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Sexual activity with a child is defined by s.9(1) Sexual Offences Act 2003: a person aged 18 or over intentionally touches another person, the touching is sexual, and either the other person is under 16 and the defendant does not reasonably believe they are 16 or over, or the other person is under 13. The offence and the definition of 'sexual' (s.78) are reproduced verbatim below. It is educational reference, not a charging decision — verify against current law, CPS charging guidance and force policy.

Offence

s.9 Sexual Offences Act 2003

Mode of trial

Triable either way; indictable only where the touching involved penetration (s.9(2))

Maximum sentence

14 years' imprisonment on conviction on indictment (both the penetration form (s.9(2), indictable only) and the non-penetration form (s.9(3), either way)); 6 months on summary conviction of the s.9(3) form.

Points to prove — statutory elements

Reproduced verbatim from the Act as published on legislation.gov.uk. These are the statutory elements, not a paraphrase — confirm the up-to-date text and any amendments at the source.

The summary penalty reproduced below refers to 'a fine not exceeding the statutory maximum'. Since section 85 of the Legal Aid, Sentencing and Punishment of Offenders Act 2012 (in force 12 March 2015) that summary fine is UNLIMITED. The '6 months' summary custodial figure (s.9(3)) is current.
s.9 — Sexual activity with a childthe offence

(1) A person aged 18 or over (A) commits an offence if—

(a) he intentionally touches another person (B),

(b) the touching is sexual, and

(c) either—

(i) B is under 16 and A does not reasonably believe that B is 16 or over, or

(ii) B is under 13.

(2) A person guilty of an offence under this section, if the touching involved—

(a) penetration of B’s anus or vagina with a part of A’s body or anything else,

(b) penetration of B’s mouth with A’s penis,

(c) penetration of A’s anus or vagina with a part of B’s body, or

(d) penetration of A’s mouth with B’s penis,

is liable, on conviction on indictment, to imprisonment for a term not exceeding 14 years.

(3) Unless subsection (2) applies, a person guilty of an offence under this section is liable—

(a) on summary conviction, to imprisonment for a term not exceeding 6 months or to a fine not exceeding the statutory maximum or both;

(b) on conviction on indictment, to imprisonment for a term not exceeding 14 years.

Read s.9 on legislation.gov.uk
s.78 — “Sexual”"sexual"

For the purposes of this Part (except sections 15A , 66B to 66D and 71 ), penetration, touching or any other activity is sexual if a reasonable person would consider that—

(a) whatever its circumstances or any person’s purpose in relation to it, it is because of its nature sexual, or

(b) because of its nature it may be sexual and because of its circumstances or the purpose of any person in relation to it (or both) it is sexual.

Read s.78 on legislation.gov.uk

Powers of arrest & search

Arrest without warrants.24

A constable may arrest without warrant anyone whom they have reasonable grounds to suspect of committing this offence, where an arrest is necessary on one of the s.24(5) grounds (PACE 1984 s.24). There is no separate statutory power of arrest in the Sexual Offences Act 2003 for this offence.

Code of Practice: PACE Code G — arrest →

CPS charging guidance

Verbatim extracts from the CPS charging guidance (Crown copyright, reproduced under the Open Government Licence v3.0). CPS revises this guidance — confirm against the live page and current law.

Offences against children under 16 (sections 9 - 13)ss.9-13 — key points & charging practice

The 2003 Act provides that the age of consent is 16. Sections 9 -13 clarify that any sexual activity involving consenting children under 16 is unlawful. Sections 9-12 cover adult defendants. Section 13 relates to child defendants.

Section 9 Sexual activity with a child

Section 10 Causing or inciting a child to engage in sexual activity

Section 11 Engaging in sexual activity in the presence of a child

Section 12 Causing a child to watch a sexual act

Key Points:

Consent is irrelevant.

There is a defence of reasonable belief that the child is 16 years or over. The defence of reasonable belief does not apply if the child is under 13 years.

There is no defence for lawfully married overseas couples where one party is under 16.

Sections 9 and 10 create two separate offences of penetrative and non-penetrative sexual activity. If penetration is involved the offence is indictable only. The maximum sentence on indictment is 14 years.

Sections 11 and 12 are either way offences which attract a maximum sentence of 10 years imprisonment.

Under section 11, there is no requirement that the complainant is actually aware of the activity, though there is a requirement that the complainant is present, or could potentially observe it. Observation can be via a webcam and includes an image.

In accordance with section 13 a person under 18 commits an offence if he does anything which would amount to an offence under sections 9-12.

Charging Practice:

When there is an absence of consent, and an absence of reasonable belief in consent, offences contrary to sections 1-4 are also available. However, prosecutors should always have regard to available sentencing options.

Where there is a clear complaint of rape of a child aged 13-15, then a charge of section 1 (rape) should always be preferred to a charge of section 9 (sexual activity with a child). Section 9 should only be considered when the prosecutor concludes that it will not be possible to prove an absence of consent. Prosecutors should be alert to the need for careful consideration of factors such as the presence of coercion, exploitation, and grooming when assessing whether or not the child freely consented.

In cases where there is clear evidence of a familial relationship, offences contrary to section 25 or section 26 (familial child sex offences) should be considered rather than sections 9 or 10.

This section should be read alongside chapter 9 Allegations involving children and young people.

Read on cps.gov.uk
Sexual Offences Act 2003 - definition of ‘sexual’‘sexual’ defined (s.78)

The definition of sexual is contained within section 78 of the Sexual Offences Act 2003 and applies to all offences in part 1 of the Act, with the exception of section 71 (sexual activity in a public lavatory).

Penetration, touching or any other activity is sexual if a reasonable person would consider that:

whatever its circumstances or any person’s purpose in relation to it, it is because of its nature sexual, or

because of its nature it may be sexual and because of its circumstances or the purpose of any person in relation to it (or both) it is sexual.

In deciding whether an activity is sexual look first at the nature of the activity. If the activity is by its nature sexual (for example, sexual intercourse, masturbation) then it is sexual for the purposes of the legislation.

Where the nature of the activity may or may not be sexual prosecutors should consider the circumstances or purpose (or both) of the defendant in deciding whether it is sexual.

Where the nature of the act cannot be sexual, it is not made sexual by a person having a secret fetish.

Touching of clothing might be sexual as in the case of R v H [2005] EWCA Crim 732.

Read on cps.gov.uk
Sexual activity with a child / causing or inciting — Sentencing Council guideline (ss.9 & 10)Legislation Quick Reference
  • Consent is not an element of s.9 and is no defence: the activity is an offence whether or not the child agreed (the CPS extract states "Consent is irrelevant"), so the prosecution need not prove absence of consent (contrast the ss.1-4 non-consensual offences). The CPS records legal incapacity to consent only for a child under 13; for a child aged 13-15 the "consent" / "freely consented" discussion in the extract concerns charge selection — e.g. preferring s.1 (rape) where absence of consent can be proved.
  • This is an adult offender's offence: s.9 requires the defendant to be aged 18 or over. Where the alleged offender is themselves under 18, the equivalent conduct is charged under s.13 Sexual Offences Act 2003, not s.9.
  • A reasonable-belief-in-age defence exists only where the child is aged 13-15 — the defendant must not reasonably believe the child was 16 or over. Where the child is under 13, there is no belief-in-age defence available.
  • Where the conduct alleged is against a child under 13, it may also fall within ss.5-7 Sexual Offences Act 2003 (the under-13 offences) — which offence to charge is a matter for the CPS.
  • A conviction triggers the notification requirements ('sex offender registration') under Part 2 Sexual Offences Act 2003, with the notification period set by the Sentencing Act 2020.

Related reading

Primary sources

BlueLineHub is independent and unofficial. Always verify with the authoritative source below.

  • Sexual Offences Act 2003, section 9 — sexual activity with a child

    The offence: a person aged 18 or over intentionally touches a child under 16 (or under 13) where the touching is sexual, and the mode of trial and maximum sentence in s.9(2) and s.9(3).

    Last checked: August 2026
    Verify on official source
  • Sexual Offences Act 2003, section 78 — 'sexual'

    The statutory definition of 'sexual' applied by s.9(1)(b).

    Last checked: August 2026
    Verify on official source
  • Legal Aid, Sentencing and Punishment of Offenders Act 2012, section 85 — removal of limit on certain fines

    In force from 12 March 2015, this removes the cap on the fine a magistrates' court may impose for offences whose penalty is expressed as 'the statutory maximum', including s.9(3).

    Last checked: August 2026
    Verify on official source
  • Police and Criminal Evidence Act 1984, section 24 — arrest without warrant: constables

    The power of arrest without warrant, subject to the necessity criteria in s.24(5).

    Last checked: August 2026
    Verify on official source
  • Sentencing Council — Sexual activity with a child / Causing or inciting a child to engage in sexual activity guideline

    The Sentencing Council guideline used to assess sentence for offences under ss.9 and 10.

    Last checked: August 2026
    Verify on official source
  • CPS Rape and Sexual Offences prosecution guidance — Chapter 8: Key Legislation and Offences (Open Government Licence v3.0)

    CPS charging guidance for Sexual Offences Act 2003 offences — the verbatim extracts shown on this card.

    Last checked: October 2026
    Verify on official source

Frequently asked

Does the penetration form of s.9 carry a higher maximum sentence?
No. Both forms of the offence carry the same 14-year maximum on conviction on indictment. Penetration (s.9(2)) changes the mode of trial to indictable only — it does not increase the maximum sentence.
Is there a reasonable-belief-in-age defence for sexual activity with a child?
Only where the child is aged 13-15: the defendant must not reasonably believe the child was 16 or over. There is no such defence where the child is under 13.
Who can be charged under s.9?
Only a person aged 18 or over. Where the alleged offender is under 18, the equivalent conduct is charged under s.13 Sexual Offences Act 2003, not s.9.