Engaging in sexual activity in the presence of a child
The offence of engaging in sexual activity in the presence of a child under s.11 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.
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What are the points to prove for engaging in sexual activity in the presence of a child under s.11 Sexual Offences Act 2003?
s.11(1) requires: (1) A is aged 18 or over, (2) A intentionally engages in an activity that is sexual (s.78) for the purpose of obtaining sexual gratification, (3) B is present or in a place from which A can be observed, (4) A knows or believes B is aware, or intends B to be aware, that A is engaging in the activity, and (5) either B is under 16 and A does not reasonably believe B is 16 or over, or B is under 13, reproduced verbatim below.
The offence is triable either way, with a maximum of 10 years' imprisonment on conviction on indictment or 6 months' imprisonment on summary conviction (s.11(2)).
Engaging in sexual activity in the presence of a child is defined by s.11(1) Sexual Offences Act 2003: a person aged 18 or over (A), for the purpose of obtaining sexual gratification, intentionally engages in an activity that is sexual when a child (B) is present or in a place from which A can be observed, and knows or believes that B is aware, or intends that B should be aware, that A is engaging in the activity, where B is under 16 and A does not reasonably believe B is 16 or over. The offence and '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.11 Sexual Offences Act 2003
Mode of trial
Triable either way
Maximum sentence
10 years' imprisonment on conviction on indictment; 6 months on summary conviction (s.11(2)).
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.
(1) A person aged 18 or over (A) commits an offence if—
(a) he intentionally engages in an activity,
(b) the activity is sexual,
(c) for the purpose of obtaining sexual gratification, he engages in it—
(i) when another person (B) is present or is in a place from which A can be observed, and
(ii) knowing or believing that B is aware, or intending that B should be aware, that he is engaging in it, and
(d) 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 is liable—
(a) on summary conviction, to imprisonment for a term not exceeding 6 months or a fine not exceeding the statutory maximum or both;
(b) on conviction on indictment, to imprisonment for a term not exceeding 10 years.
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.
Powers of arrest & search
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 stop/search power 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.
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.
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.
- This is not a consent offence — s.11 falls within the child (under-16) offences in Part 1 of the Act, and the consent provisions (ss.74-76) do not apply. Consent is not in issue.
- The offence requires the offender to be aged 18 or over and to act for the purpose of obtaining sexual gratification — both are elements of s.11(1) and must be established, not assumed.
- A reasonable-belief-in-age defence exists only where the child is 13-15 (A must not reasonably believe B was 16 or over). Where the child is under 13, there is no belief-in-age defence available.
- A conviction under s.11 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.
- Verify on official source
Sexual Offences Act 2003, section 11 — engaging in sexual activity in the presence of a child
The offence, its elements (offender aged 18 or over, sexual gratification purpose, the child's presence or observation, and the under-16/under-13 limbs), and the maximum sentence (s.11(2)).
Last checked: August 2026 - Verify on official source
Sexual Offences Act 2003, section 78 — meaning of 'sexual'
The statutory definition of 'sexual' applied by s.11(1)(a).
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 in the presence of a child / Causing a child to watch a sexual act guideline
The Sentencing Council guideline used to assess sentence within the statutory maximum set by s.11(2), covering both ss.11 and 12.
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
Frequently asked
- What are the elements of engaging in sexual activity in the presence of a child?
- Under s.11(1): A is aged 18 or over; A intentionally engages in an activity that is sexual (s.78) for the purpose of obtaining sexual gratification; B is present or in a place from which A can be observed; A knows or believes B is aware, or intends B to be aware, that A is engaging in the activity; and either B is under 16 and A does not reasonably believe B is 16 or over, or B is under 13.
- Is consent relevant to this offence?
- No. s.11 is a child (under-16) offence and the consent provisions (ss.74-76 Sexual Offences Act 2003) do not apply to it.
- Is there a belief-in-age defence?
- Only where the child is 13-15 — the offender must not reasonably believe the child was 16 or over. Where the child is under 13, there is no belief-in-age defence.
- What power lets me arrest for this offence?
- PACE 1984 s.24 — arrest without warrant where you have reasonable grounds to suspect the offence and an arrest is necessary on one of the s.24(5) grounds. There is no separate statutory stop/search power for this offence.