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Common Assault & Battery

Common assault and battery — common-law offences whose mode of trial and penalty are fixed by s.39 Criminal Justice Act 1988, plus the either-way charging vehicle for assault on an emergency worker, arrest and search powers, and maximum sentence, for frontline officers.

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

Last reviewed: 27 August 2026 · Next review due: 27 February 2027

Reviewed by BlueLineHub Editorial

Are common assault and battery defined by statute, and what is the maximum sentence?

No — assault and battery are COMMON LAW offences with no statutory definition. Assault is intentionally or recklessly causing another to apprehend immediate unlawful personal violence; battery is intentionally or recklessly applying unlawful force to another.

s.39 Criminal Justice Act 1988 makes them summary offences only, with a maximum of 6 months' imprisonment and/or a level 5 fine. Where the victim is an emergency worker acting in the exercise of their functions, s.1 Assaults on Emergency Workers (Offences) Act 2018 makes the same conduct triable either way, with a maximum of 2 years' imprisonment on indictment.

All offence cards

Common assault and battery are COMMON LAW offences — there is no statutory definition of their elements. Assault is intentionally or recklessly causing another person to apprehend immediate unlawful personal violence; battery is intentionally or recklessly applying unlawful force to another person. s.39 Criminal Justice Act 1988 does not create these offences or define their elements — it makes them summary offences and sets the penalty, reproduced verbatim below. Where the victim is an emergency worker acting in the exercise of their functions, the same common-law conduct is instead charged as an either-way offence under s.1 Assaults on Emergency Workers (Offences) Act 2018, also reproduced verbatim below. It is educational reference, not a charging decision — verify against current law, CPS charging guidance and force policy.

Offence

s.39 Criminal Justice Act 1988

Mode of trial

Common assault / battery: summary-only. Assault on an emergency worker (2018 Act s.1): triable either way.

Maximum sentence

Common assault / battery: 6 months' imprisonment and/or a level 5 fine (s.39 CJA 1988). Assault on an emergency worker: 2 years on indictment (Assaults on Emergency Workers Act 2018 s.1; the maximum was raised from 12 months to 2 years by the Police, Crime, Sentencing and Courts Act 2022, in force 28 June 2022).

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.

s.39 — Common assault and battery to be summary offences.summary offence & penalty

(1) Common assault and battery shall be summary offences and a person guilty of either of them shall be liable to a fine not exceeding level 5 on the standard scale, to imprisonment for a term not exceeding six months, or to both.

(2) Subsection (1) is subject to section 1 of the Assaults on Emergency Workers (Offences) Act 2018 (which makes provision for increased sentencing powers for offences of common assault and battery committed against an emergency worker acting in the exercise of functions as such a worker).

Read s.39 on legislation.gov.uk
s.1 — Common assault and batteryassault on an emergency worker

(1) The section applies to an offence of common assault, or battery, that is committed against an emergency worker acting in the exercise of functions as such a worker.

(2) A person guilty of an offence to which this section applies is liable—

(a) on summary conviction, to imprisonment for a term not exceeding the general limit in a magistrates’ court, or to a fine, or to both;

(b) on conviction on indictment, to imprisonment for a term not exceeding 2 years, or to a fine, or to both.

(3) For the purposes of subsection (1), the circumstances in which an offence is to be taken as committed against a person acting in the exercise of functions as an emergency worker include circumstances where the offence takes place at a time when the person is not at work but is carrying out functions which, if done in work time, would have been in the exercise of functions as an emergency worker.

(4) In relation to an offence committed before 2 May 2022, the reference in subsection (2)(a) to the general limit in a magistrates’ court is to be read as a reference to 6 months.

(5) In consequence of subsections (1) to (3), in section 39 of the Criminal Justice Act 1988 (which provides for common assault and battery to be summary offences punishable with imprisonment for a term not exceeding 6 months)—

(a) the existing text becomes subsection (1);

(b) after that subsection insert—

(2) Subsection (1) is subject to section 1 of the Assaults on Emergency Workers (Offences) Act 2018 (which makes provision for increased sentencing powers for offences of common assault and battery committed against an emergency worker acting in the exercise of functions as such a worker).

(6) This section applies only in relation to offences committed on or after the day it comes into force.

Read s.1 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 common assault, battery, or assault on an emergency worker, where an arrest is necessary on one of the s.24(5) grounds (PACE 1984 s.24).

Code of Practice: PACE Code G — arrest →
Search on arrests.32

On arrest away from a police station, PACE 1984 s.32 allows a search of the arrested person for anything that might be evidence of the offence, where there are reasonable grounds.

Code of Practice: PACE Code B — search of premises →

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.

Battery / common assaultCPS charging guidance

Common assault is an act by which a person intentionally or recklessly causes another to suffer or apprehend immediate unlawful violence. Battery is committed by the intentional or reckless application of unlawful force to another person. These are two separate offences, placed on a statutory footing by section 39 CJA 1988. Where battery is selected it should be charged as “assault by beating”: DPP v Taylor and Little [1992] Q.B. 645.

Where the offence amounts to domestic abuse, prosecutors should have regard to section 39A CJA 1988 which extends the usual summary time limit in certain circumstances. For further information see the Domestic Abuse prosecution guidance.

Consent is a defence to battery (see Brown, below).

In England, section 58 of the Children Act 2004 removed the common law defence of reasonable punishment of a child for all offences except common assault and battery for parents and adults acting in loco parentis.

When deciding upon the appropriate charge, the vulnerability of the victim, such as a child being assaulted by an adult, should be treated as a significant aggravating factor. Prosecutors must also have regard to the availability of the reasonable punishment defence when considering charges against parents or persons acting in loco parentis. Therefore, in these cases, injuries that would normally lead to a charge of ‘common assault’ could be more appropriately charged as ‘assault occasioning actual bodily harm’ (e.g. a black eye) contrary to section 47 of the Offences against the Person Act 1861 (for which the defence of reasonable punishment is not available) unless the injury to the child was merely transient and trifling (e.g. temporary reddening of the skin).

If a prosecutor determines that the correct charge is common assault or battery, the next determination is whether the punishment inflicted was moderate and reasonable. R v H [2001] 2 FLR 431 found the following factors were relevant in determining whether the punishment in question was reasonable and moderate.

the nature and context of the defendant's behaviour;

the duration of that behaviour;

the physical and mental consequences in respect of the child;

the age and personal characteristics of the child;

the reasons given by the defendant for administering the punishment.

The Children (Abolition of Defence of Reasonable Punishment) (Wales) Act 2020 completely abolished the common law defence of reasonable punishment of a child in Wales and amended section 58 of the Children Act 2004 so that it only applies to offences committed in England.

Educational establishments may not give corporal punishment to children: section 548 Education Act 1996 (but may use reasonable force for specified reasons including preventing an offence: section 93 Education and Inspections Act 2006.

Read on cps.gov.uk
Common assault / assault on emergency worker — Sentencing Council guideline
  • Common assault and battery are common-law offences — s.39 CJA 1988 fixes their mode of trial and penalty only, it does not define them.
  • Where the victim suffers more serious injury, the conduct is instead charged under the Offences against the Person Act 1861 (e.g. ABH, GBH); that an offence was committed against an emergency worker is also an aggravating factor at sentence for those more serious offences (a statutory aggravating factor under the Sentencing Code — see the Sentencing Council guidance).
  • Racially or religiously aggravated common assault is a separate either-way offence, not this s.39 summary-only offence.

Related reading

Primary sources

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

  • Criminal Justice Act 1988, section 39 — common assault and battery

    Makes common assault and battery summary offences and sets the penalty: a fine not exceeding level 5, imprisonment not exceeding 6 months, or both. Does not define the elements, which are common law.

    Last checked: August 2026
    Verify on official source
  • Assaults on Emergency Workers (Offences) Act 2018, section 1 — assault on an emergency worker

    Makes common assault or battery on an emergency worker acting in the exercise of functions as such a worker triable either way, with a maximum of 2 years' imprisonment on indictment.

    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: July 2026
    Verify on official source
  • CPS charging guidance — Offences against the Person (Open Government Licence v3.0)

    CPS charging standard for OAPA/assault offences — the level-of-injury charging threshold (verbatim extract shown on this card).

    Last checked: August 2026
    Verify on official source

Frequently asked

Is common assault defined by statute?
No. Assault and battery are common-law offences with no statutory definition of their elements. Assault is intentionally or recklessly causing another to apprehend immediate unlawful personal violence; battery is intentionally or recklessly applying unlawful force to another. s.39 Criminal Justice Act 1988 only makes them summary offences and fixes the penalty.
What is the maximum sentence for common assault?
6 months' imprisonment and/or a level 5 fine (s.39 Criminal Justice Act 1988), and it is summary-only. Where the victim is an emergency worker acting in the exercise of their functions, the offence is instead triable either way under s.1 Assaults on Emergency Workers (Offences) Act 2018, with a maximum of 2 years' imprisonment on indictment — raised from 12 months by the Police, Crime, Sentencing and Courts Act 2022 (in force 28 June 2022).
What power lets me arrest for common assault?
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.