The only powers of detention that are available to a Constable in England and Wales are discussed above. A Constable's power of arrest is provided by the following sources: •
Common law – to prevent a
breach of the peace • Section 49 of the
Prison Act 1952 • Section 32
Children & Young Persons Act 1969 •
Immigration Act 1971 • Section 7 of the
Bail Act 1976 • Section 1 & Section 13 of the
Magistrates' Courts Act 1980 (warrants) • Section 136 of the
Mental Health Act 1983 • Section 24
Police Criminal Evidence Act 1984 • Section 46A
Police Criminal Evidence Act 1984 • Section 31
Police Criminal Evidence Act 1984 • Section 6D of the
Road Traffic Act 1988 • Section 41 of the
Terrorism Act 2000 • Section 9 of
Anti-social Behaviour, Crime and Policing Act 2014 • Section 27 of the
National Security Act 2023 Whether being arrested, detained or spoken to about an offence or suspected offence, Section 10 Code C of PACE states that the caution must be used. When used in conjunction with an arrest the suspect: • must be told
that he is under arrest, and • must be "told in simple, non-technical language that he could understand, the essential legal and factual grounds for his arrest" including why the arrest in itself is necessary A person must be "cautioned" when being arrested unless this is impractical due to the behaviour or condition of the arrestee, such as drunkenness or unresponsive. There is also a requirement to caution an individual when they are also suspected of a criminal offence but are not being subject to arrest at that time. The caution is:You do not have to say anything, but it may harm your defence if you do not mention when questioned something which you may later rely on in court. Anything you do say may be given in evidence. Deviation from this accepted form is permitted provided that the same information is conveyed. There also exists the "when" caution (above), "now" caution and a "restricted" caution. The "when" caution is generally used during an arrest or interview on the street or at a police station. The "now" caution is most commonly used when charging or issuing an
FPN or
PND. Persons other than constables "who are charged with the duty of investigating offences or charging offenders" (e.g. escort officers, detention officers, DWP fraud investigators,
PCSOs,
IPCC investigators, etc.) have a duty to adhere to any relevant provisions of the codes of practice as per Section 67(9)
PACE. There are three general means of arresting without warrant: firstly in relation to a criminal offence, secondly in relation to a breach of the peace and thirdly for miscellaneous purposes.
Criminal offences Prior to 1967, the only general power of arrest for offences was that which existed for
felonies. In 1964,
Home Secretary Rab Butler asked the
Criminal Law Revision Committee to look into the distinction between
felonies and
misdemeanours, and their recommendation was that the distinction be abolished, as it was obsolete. As most powers of arrest relied on the offence being a felony, a new set of arrest criteria were introduced by the
Criminal Law Act 1967, which created the
arrestable offence (defined as an offence where an adult could be sentenced to imprisonment for five years or more). These arrest powers were later re-enacted by the
Police and Criminal Evidence Act 1984 (PACE), which also created an alternative set of arrest criteria (the
"general arrest criteria") which applied in particular circumstances, such as where the person's name or address were not known. As time went on, the number of offences that were defined as "arrestable" grew significantly, to the point where the distinction was becoming confusing and unworkable. In 2005, the PACE powers of arrest were repealed by the
Serious Organised Crime and Police Act, which also abolished the
arrestable offence and instead replaced it with a need-tested system for arrest which applied to every offence. A constable may therefore arrest (without a warrant): • anyone who is about to commit an offence, or anyone whom he has reasonable grounds for suspecting to be about to commit an offence, • anyone who is in the act of committing an offence, or anyone whom he has reasonable grounds for suspecting to be committing an offence, and • anyone who is guilty of an offence or anyone whom he has reasonable grounds for suspecting to be guilty of an offence. Additionally, if a constable suspects that an offence has been committed, then: Voluntary attendance at a police station at a later date negates the need to arrest for the prompt and effective investigation when there is no suggestion that the suspect will not attend and if the suspect's name/address can be ascertained. They are also to be immediately informed they are under arrest if a decision is made to arrest them to prevent them from leaving by the constable.
Alexander, Farrelly et al. judicial review (2009). Section 30 of
PACE states that any person arrested in a place other than a police station must be taken to a police station as soon as practicable after the arrest. This section also states that if at any time before reaching the police station, a constable is satisfied there are no grounds for keeping that person under arrest, they must be released without bail immediately and a record of this must be made. • Section 78 - concerns exclusion of unfair evidence
Breach of the peace Breach of the peace is one of the oldest, and most basic offences still in existence in England & Wales. It is an offence at common law, not
codified, so it cannot be found in any
act of Parliament. The power of arrest in relation to breach of the peace is available to anyone (regardless of whether they are a constable or not), who may arrest without warrant: • an officer, warrant officer, non-commissioned officer or airman of the
Royal Air Force, • an officer, warrant officer, non-commissioned officer or soldier of the
British Army, :who has deserted or is
absent without leave, • who is unlawfully at large from a
civilian prison,
secure accommodation or
young offenders institution or military prison, • who has failed to answer
bail or street bail, • who has absconded whilst on remand for a report on their mental condition, on remand for treatment or subject to an interim hospital order under the
Mental Health Act 1983, • who has absconded whilst being transferred to or from the United Kingdom under a prisoner transfer agreement, or • who has absconded from a place of safety to which he has been taken under the Powers of Criminal Courts (Sentencing) Act 2000 or from local authority accommodation in which he is required to live, or to which he has been remanded or committed. ;Alcohol and driving • who has provided a positive sample of breath (or has failed to provide any sample at all) under the Road Traffic or Transport and Works Acts, or • who: • has been required to provide a sample of breath, blood or urine under section 7 or section 7A of the Road Traffic Act 1988 (that is to say, an evidential, not a preliminary breath test) • the constable believes is over the prescribed limit or is unfit to drive, and • is likely to drive or attempt to drive a vehicle. ;Other powers • to take fingerprints after a conviction • who has failed to comply with a conditional caution, • who has committed an offence against bylaws made under the
Military Lands Act 1892, • who he reasonably suspects of being a "terrorist". • who he reasonably suspects of breaching any bail conditions ==Reasonable force==