The Police Service of Northern Ireland (PSNI; ; ) is the police service responsible for law enforcement and the prevention of crime within Northern Ireland.

It is the successor to the Royal Ulster Constabulary (RUC) after it was reformed and renamed in 2001 on the recommendation of the Patten Report.

The PSNI is the third-largest police service in the United Kingdom in terms of officer numbers (after the Metropolitan Police and Police Scotland) and the second-largest in terms of geographic area of responsibility, after Police Scotland. The PSNI is approximately half the size of Garda Síochána in terms of officer numbers.

Background As part of the Good Friday Agreement, there was an agreement to introduce a new police service initially based on the body of constables of the RUC. As part of the reform, an Independent Commission on Policing for Northern Ireland (the Patten Commission) was set up, and the RUC was replaced by the PSNI on 4 November 2001.McGoldrick, Stacey and McArdle, Andrea (2006). Uniform Behavior: Police Localism and National Politics. Palgrave Macmillan, p. 116. Morrison, John F. (2013). Origins and Rise of Dissident Irish Republicanism: The Role and Impact of Organizational Splits. A&C Black, p. 189. The Police (Northern Ireland) Act 2000 named the new police service as the Police Service of Northern Ireland (incorporating the Royal Ulster Constabulary); shortened to Police Service of Northern Ireland for operational purposes.s.1, Police (Northern Ireland) Act 2000

The RUC was a militarised police force and played a key role in policing the violent conflict known as the Troubles. Initially, Sinn Féin, which represented about a quarter of Northern Ireland voters at the time, refused to endorse the PSNI until the Patten Commission's recommendations were implemented in full. However, as part of the St Andrews Agreement, Sinn Féin announced its full acceptance of the PSNI in January 2007. All major political parties in Northern Ireland now support the PSNI.

Organisation The senior officer in charge of the PSNI is its chief constable. The chief constable is appointed by the Northern Ireland Policing Board, subject to the approval of the Minister of Justice for Northern Ireland. The Chief Constable of Northern Ireland is the third-highest paid police officer in the UK (after the Commissioner and Deputy Commissioner of the Metropolitan Police). The current chief constable is Jon Boutcher. He was appointed on an interim basis after the resignation of Simon Byrne in September 2023 and was subsequently confirmed as chief constable on 7 November 2023.

The police area is divided into eight districts, each headed by a chief superintendent. Districts are divided into areas, each commanded by a chief inspector; these in turn are divided into sectors, each commanded by an inspector. In recent years, under new structural reforms, some chief inspectors command more than one area as the PSNI strives to make savings.

In 2001, the old police divisions and sub-divisions were replaced with 29 district command units (DCUs), broadly coterminous with local council areas. In 2007, the DCUs were replaced by eight districts ('A' to 'H') in anticipation of local government restructuring under the Review of Public Administration. Responsibility for policing and justice was devolved to the Northern Ireland Assembly on 9 March 2010, although direction and control of the PSNI remains under the chief constable.

In addition to the PSNI, there are other agencies which have responsibility for specific parts of Northern Ireland's transport infrastructure: Belfast Harbour Police Belfast International Airport Constabulary

Jurisdiction PSNI officers have full powers of a constable throughout Northern Ireland and the adjacent United Kingdom waters. Other than in mutual aid circumstances they have more limited powers of a constable in the other two legal jurisdictions of the United Kingdom—England and Wales, and Scotland. Police staff, although non-warranted members of the service, contribute to both back-office, operational support and front-line services, sometimes operating alongside warranted colleagues.

Co-operation with Garda Síochána The Patten Report recommended that a programme of long-term personnel exchanges should be established between the PSNI and the Garda Síochána, the national police force of the Republic of Ireland. This recommendation was enacted in 2002 by an Inter-Governmental Agreement on Policing Cooperation, which set the basis for the exchange of officers between the two services. There are three levels of exchanges: Personnel exchanges, for all ranks, without policing powers and for a term up to one year Secondments: for ranks from sergeant to chief superintendent, with policing powers, for up to three years Lateral entry by the permanent transfer of officers for ranks above inspector and under assistant commissioner

The protocols for these movements of personnel were signed by both the chief constable of the PSNI and the Garda Commissioner on 21 February 2005.

Accountability The PSNI is supervised by the Northern Ireland Policing Board.

The Police Ombudsman for Northern Ireland deals with any complaints regarding the PSNI, and investigates any allegations of misconduct by police officers. Police staff do not fall under the ombudsman's jurisdiction. The current Police Ombudsman is Marie Anderson, who took over from Michael Maguire in July 2019.

The PSNI is also internally regulated by its Professional Standards Department, who can direct local "professional standards champions" (superintendents at district level) to investigate relatively minor matters, while a "misconduct panel" will consider more serious misconduct issues. Outcomes from misconduct hearings include dismissal, a requirement to resign, reduction in rank, monetary fines and cautions.

Recruitment

The PSNI was initially legally obliged to operate an affirmative action policy of recruiting 50% of its trainee officers from a Catholic background and 50% from a non-Catholic background, as recommended by the Patten Report, in order to address the underrepresentation of Catholics that had existed for many decades in policing; in 2001 the RUC was almost 92% Protestant. Many unionist politicians said the "50:50" policy was unfair, and when the Bill to set up the PSNI was going through Parliament, Minister of State Adam Ingram stated: "Dominic Grieve referred to positive discrimination and we hold our hands up. Clause 43 refers to discrimination and appointments and there is no point in saying that that is anything other than positive discrimination." However, the Northern Ireland Human Rights Commission cited international human rights law to show that special measures to secure minority participation were in accordance with human rights standards and did not in law constitute 'discrimination'.

By February 2011, 29.7% of the 7,200 officers were from a Catholic background, but among the 2,500 police staff (non-warranted members), where the 50:50 rule operated only for larger recruitment drives, the proportion of Catholics was just 18%. The British Government nevertheless proposed to end the 50:50 measure, and provisions for 'lateral entry' of Catholic officers from other police forces, with effect from the end of March 2011. Following a public consultation the special measures were ended in respect of police officers and police staff in April 2011.

Deloitte conducted recruitment exercises on behalf of the PSNI, and was the dominant firm in the Consensia Partnership which existed from 2001 to 2009.

As of 2017, the PSNI have announced that it will be introducing new schemes to increase the number of Catholics in the force. The PSNI is focusing on tackling the fear factor of joining the service as violent dissident Republicans are discouraging Catholics from joining and continue to attack Catholic officers.

Policies In September 2006 it was confirmed that Assistant Chief Constable Judith Gillespie approved the PSNI policy of using children as informants including in exceptional circumstances to inform on their own family, but not their parents. The document added safeguards including having a parent or "appropriate adult" present at meetings between juveniles and their handler. It also stressed a child's welfare should be paramount when considering the controversial tactics and required that any risk had been properly explained to them and a risk assessment completed.

Specialist units Armed Response Unit Specially-trained Armed Response Unit (ARU) officers support other parts of PSNI when faced with people who are carrying weapons such as knives and firearms.

Headquarters Mobile Support Unit Headquarters Mobile Support Unit (HMSU) is the tactical unit of the PSNI. HMSU officers are trained to Specialist Firearms Officer (SFO) and Counter Terrorist Specialist Firearms Officer (CTSFO) standards. They undergo a 26-week training programme including firearms, unarmed combat, roping, driving and photography.

Tactical Support Group Tactical Support Group (TSG) officers provide a range of core and specialist services to district policing teams.

Core TSG functions include public order, counter-terrorism and crime reduction, community safety, crime scene response, and surveillance capability.

Uniform

The colour of the PSNI uniform is bottle green. Pre-1970s RUC uniforms retained a dark green called rifle green, which was often mistaken as black. A lighter shade of green was introduced following the Hunt Report in the early 1970s, although Hunt recommended that British blue should be introduced. The Patten report, however, recommended the retention of the green uniform (Recommendation No. 154). The RUC officially described this as 'rifle green'. When the six new versions of the PSNI uniform were introduced, in March 2002, the term 'bottle green' was used for basically the same colour to convey a less militaristic theme. In 2018, a formal review was launched about the current uniform after officers gave feedback on it.

On 31 January 2022, a new uniform was introduced for frontline officers. This change replaced the white shirt and tie that had been worn since 2001 with a green wicking material T-shirt. This new style shirt is embroidered with the PSNI crest on the left breast and the word "POLICE" on the left collar and both sleeves. The new shirt also facilitates the wearing of epaulettes to display rank and numerals. This modern workwear is similar to that of Police Scotland aside from colour and to uniforms of some police services in England and Wales. Officer headwear has remained the same and traditionally consists of peaked caps for males and kepi style hats for females. Baseball style caps are worn by tactical units.

Badge and flag +"The design of the emblem for the police is the design illustrated in Schedule 1 to these Regulations." —Police Emblems and Flags Regulations (Northern Ireland) 2002, Section 3The PSNI badge features the St. Patrick's saltire, and six symbols representing different and shared traditions: The Scales of Justice (representing equality and justice) A crown (a traditional symbol of royalty but not the St Edward's Crown worn by or representing the British Sovereign) The harp (a traditional Irish symbol but not the Brian Boru harp used as an official emblem in the Republic) A torch (representing enlightenment and a new beginning) An olive branch (a peace symbol from Ancient Greece) A shamrock (a traditional Irish symbol, used by St Patrick, patron saint of all Ireland, to explain the Christian Trinity) +"The design of the flag for the police is the design illustrated in Schedule 1 to these Regulations on a dark green background." —Police Emblems and Flags Regulations (Northern Ireland) 2002, Section 8