Simon Byrne had to deal with a number of controversies and challenges since taking up the position of the chief constable of the Police Service of Northern Ireland in July 2019.

Mr Byrne arrived in the region after a tumultuous end to his tenure as chief constable of Cheshire Police, when he was suspended over misconduct claims.

He went on to be cleared by a panel of all 74 allegations made against him.

His PSNI contract was recently extended by the Northern Ireland Policing Board until 2027.

Here are some of the main controversies from Mr Byrne's career with the PSNI.

September 2019

Mr Byrne was criticised after making a comment suggesting that the children of paramilitaries could be taken into care.

Following a furore, Mr Byrne said he was happy to withdraw "the interpretation that children are pawns, if that's what's been heard", adding it was not his intention.

December 2019

A photograph of Mr Byrne standing outside Crossmaglen Police Station on Christmas Day with heavily armed colleagues sparked a row when it was tweeted.

Simon Byrne apologised for the tweet and also announced a review of policing in the area

Sinn Féin MLA Conor Murphy said the image was "highly offensive" to local residents and raised the issue of "militaristic-style" policing in South Armagh, an area formerly dubbed no-go by the British Army during the Troubles.

Mr Byrne apologised for the tweet and also announced a review of policing in the area.

June 2020

Mr Byrne ditched proposals to remove the name Northern Ireland from a new police logo.

The proposal was met with criticism from some within the unionist and loyalist community.

Responding to the controversy, Mr Byrne said the simplified crest would no longer be included in a public consultation on wider rebranding proposals.

6 June 2020

Police move in to issue fines at Black Lives Matter protests in Belfast and Derry when crowds gathered despite coronavirus social distancing rules restricting large groups meeting.

Organisers raised concerns at the policing of the event compared to others during the pandemic and Police Ombudsman Marie Anderson later found that concerns around the discriminatory police handling of Black Lives Matter protests were justified.

The PSNI was criticised over the policing of the funeral of Bobby Storey which saw huge crowds gather despite coronavirus restrictions

In response, Mr Byrne said he was sorry that relations with those minority communities had been damaged and vowed to "put things right".

30 June 2020

The PSNI is criticised for the policing of the funeral of senior republican Bobby Storey which saw huge crowds gather despite coronavirus restrictions, including Sinn Féin vice president Michelle O'Neill.

After unionist leaders questioned why no action was taken to enforce the rule, Cumbria Deputy Chief Constable Mark Webster was appointed to review the policing operation.

It sparked a row that rumbled on in the ensuing months. Then DUP leader Arlene Foster called on Mr Byrne to resign in April 2021 after prosecutors ruled out action against Sinn Féin leaders who attended the funeral, citing police engagement with the organisers among reasons why any prosecution would likely fail.

5 February 2021

Senior Sinn Féin members, including Ms O'Neill, criticise the policing of a memorial event for the 29th anniversary of the loyalist attack at a Sean Graham bookmakers shop on the Ormeau Road in Belfast which killed five after a survivor of the atrocity was arrested.

The row started when two junior police officers moved in to enforce coronavirus restrictions.

Mr Byrne apologised to those at the event and announced that one of the officers had been suspended and another repositioned while the Police Ombudsman investigated the incident.

The Police Ombudsman later sent a file to the Public Prosecution Service (PPS), but the PPS decided against pursuing a prosecution of the officers.

August 2023

Revelations of a "monumental" data breach which saw details of around 10,000 police officers and staff published online forced Mr Byrne to cut short a family holiday to return to Belfast for an emergency meeting of the Northern Ireland Policing Board.

It later emerged that dissident republicans, who continue to target police officers for assassination were among those who accessed the data sparking concern among officers and staff for their safety.

Simon Byrne said he was 'deeply sorry' over the data breach

Further data breaches emerged in the weeks after.

Mr Byrne said he was "deeply sorry", but said he had no plans to resign, adding the PSNI needed consistency and calm heads to be led through an "unprecedented crisis".

Mr Byrne has to attend his third emergency Policing Board meeting in a month after a row erupts following a High Court ruling.

Mr Justice Scoffield says that two police officers were unlawfully disciplined following the Sean Graham bookmakers memorial event in 2021.

The judge says the officers were disciplined to allay any threat of Sinn Féin abandoning its support for policing in Northern Ireland.

Mr Byrne says he accepts the court ruling and faces calls to resign from unionist politicians.