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Causing a child to watch a sexual act

The offence of causing a child to watch a sexual act under s.12 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 causing a child to watch a sexual act under s.12 Sexual Offences Act 2003?

Causing a child to watch a sexual act (s.12(1) Sexual Offences Act 2003) is committed where a person aged 18 or over, for the purpose of sexual gratification, intentionally causes a child to watch a third person engaging in sexual activity (s.78) or to look at an image of such activity, and either the child is under 16 and A does not reasonably believe they are 16 or over, or the child 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 on summary conviction (s.12(2)).

All offence cards

Causing a child to watch a sexual act is an offence under s.12(1) Sexual Offences Act 2003: a person aged 18 or over, for the purpose of sexual gratification, intentionally causes a child to watch a third person engaging in sexual activity, or to look at an image of any person engaging in such activity, where the child is under 16 and A does not reasonably believe they are 16 or over, or the child is under 13. The offence is reproduced verbatim below (s.12). It is educational reference, not a charging decision — verify against current law, CPS charging guidance and force policy.

Offence

s.12 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.12(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.

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 is current.
s.12 — Causing a child to watch a sexual actthe offence

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

(a) for the purpose of obtaining sexual gratification, he intentionally causes another person (B) to watch a third person engaging in an activity, or to look at an image of any person engaging in an activity,

(b) the activity 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 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.

Read s.12 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 in the presence of a child / causing a child to watch — Sentencing Council guideline (ss.11 & 12)Legislation Quick Reference
  • The offence covers both watching a live sexual act and looking at an image of one — 'image' is defined in s.79(4)-(5) as a moving or still image, including data capable of conversion into an image.
  • The offence requires the purpose of sexual gratification — it is not made out by mere carelessness or a lack of any sexual purpose on A's part.
  • A must be aged 18 or over — this is not an offence a child can commit against another child under s.12.
  • Consent is not in issue for this offence — s.12 has no 'without consent' element and ss.74-76 (the consent definition and presumption sections used on the ss.1-4 cards) do not apply.
  • A reasonable-belief-in-age defence exists only where the child is 13-15 — A must not reasonably believe the child was 16 or over. Where the child is under 13, there is no belief-in-age defence.
  • A conviction for this offence triggers the notification requirements (the 'sex offenders register') under Part 2 Sexual Offences Act 2003.

Related reading

Primary sources

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

  • Sexual Offences Act 2003, section 12 — causing a child to watch a sexual act

    The offence: a person aged 18 or over, for the purpose of sexual gratification, intentionally causing a child to watch a third person engaging in sexual activity or to look at an image of such activity, and the mode of trial and maximum sentence in s.12(2).

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

    The statutory definition of when an activity is 'sexual'.

    Last checked: August 2026
    Verify on official source
  • Sexual Offences Act 2003, section 79 — interpretation, Part 1

    The definition of 'image' at s.79(4)-(5) — a moving or still image, including data capable of conversion into an image.

    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.12(2).

    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
  • 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 it matter whether the child watches a live act or an image?
No. s.12(1) Sexual Offences Act 2003 covers both causing a child to watch a third person engaging in sexual activity and causing a child to look at an image of such activity. 'Image' is defined in s.79(4)-(5) as a moving or still image, including data capable of conversion into an image.
What is the age requirement for the offender?
The offender (A) must be aged 18 or over. s.12 does not apply to a child who causes another child to watch a sexual act.
Is belief that the child was 16 or over a defence?
Only where the child is 13-15: A must not reasonably believe the child was 16 or over for the offence to apply on that limb. Where the child is under 13, there is no reasonable-belief-in-age defence at all.