As former Cheshire Police chief constable Simon Byrne prepares to take on Northern Ireland's top policing post replacing George Hamilton, he faces a number of significant challenges.
While a start date has yet to be finalised Mr Byrne is expected to arrive in post just in time for the July marching season.
While there is a reasonable expectation that this Twelfth will be a peaceful one, there are still considerable policing considerations involved in providing adequate security for the Orange Order marches.
The issue of legacy is also one that Mr Byrne will not have dealt with in his previous posts and one that has dogged previous chief constables.
He has 36-years of policing experience - a third of that at high rank.
However, policing in Northern Ireland remains politicised in a way Mr Byrne will not have experienced before.
He was the only candidate who attended a familiarisation day organised by the Policing Board ahead of interviews.
In the most scrutinised process in the PSNI's history members of the interview panel were required to take part in a two day training session and an outside employment expert was brought in to oversee the process.
The board were at pains to point out that Mr Byrne's appointment was unanimous and his interview impressed the panel, his extensive experience at a high level making him the most attractive candidate.
With Brexit uncertainty looming Mr Byrne will be responsible for working out a cross border policing ban that will have to take into consideration the security situation in an area he will be geographically unfamiliar with.
It will also require establishing a working relationship with Garda Commissioner and former PSNI deputy chief constable Drew Harris in relation to cross border policing commitments.
This is particularly relevant in a heightened security situation.
The increase in dissident republican activity in Derry, ongoing recruitment of young people to paramilitary groups, both loyalist and republican, are areas that again Mr Byrne will have had no previous experience of.
Policing budgets and the issue of dwindling confidence in the PSNI in nationalist areas, problems recruiting Catholic officers and the political implications of this are also areas in need of address by the new Chief Constable.
But probably the biggest challenge he faces will be winning the approval of rank and file officers, who had favoured one of the two serving PSNI shortlisted candidates Stephen Martin or Mark Hamilton for the job.
The last Chief Constable recruited from outside the jurisdiction Matt Baggott, had an uncomfortable time in the top post.
His handling of the 2012 loyalist flag protests lost him the confidence of his senior officers and large sections of the public who will view his appointment with scepticism.
Mr Byrne spent most of his career in Merseyside Police, he held senior positions there and at the Metropolitan Police and Greater Manchester Police, before his appointment as chief constable of Cheshire Police in 2014.
That posting ended in controversy with a lengthy suspension amid allegations of 'Gross Misconduct with regards to Authority, Respect and Courtesy and Discreditable Conduct'.
He was suspended while 74 allegations of misconduct were investigated, only for him to be exonerated last year on all counts.
Largely, he was accused of occasional offensive behaviour towards staff.
Among the allegations were that he permitted his children to download applications to his Cheshire Police iPad and when the device became adversely affected, he passed it to the IT department to resolve the problem.
When IT raised the issue of his children accessing a work device he was alleged to have become defensive and told a staff member "it wasn't her concern" who had been using the iPad.
Another allegation was that Mr Byrne failed to attend a meeting to thank an officer for their involvement in a case leaving another member of staff to meet the officer saying his son 'had a bad dream' and he was taking him to school.
It was also alleged he caused Cheshire Police to waste public funds by cancelling numerous engagements after travel and accommodation were already booked.
Among the more bizarre allegations was that Mr Byrne contacted a woman known as 'Witness C' and asked that she enquire of West Yorkshire Police about the reasons for a traffic jam he was stuck in while in West Yorkshire with his family.
On another occasion Mr Byrne's PA 'Witness A claimed he shouted at her because he was stuck in traffic and that she should have been 'keeping an eye' on the traffic on his behalf.
A tribunal ruled much of what was claimed was either exaggerated or probably did not happen and that the suspension "could and should have been avoided".
He was the only one of the four short listed candidates not in a post at the time of last week's interview and will now face a challenge that is considered one of the toughest policing jobs on these islands.
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Five key Challenges
Legacy - policing the past.
Brexit - cross border policing.
Security - the ongoing dissident republican threat.
Budgets - delivering increased policing with funding cuts.
Confidence - nationalist confidence in policing at an all time low.
