BBC News profiles the five candidates on the shortlist to succeed Sir Hugh Orde as chief constable of the PSNI
Merseyside Chief Constable Bernard Hogan-Howe
He has been in charge of the Merseyside police since 2004, immediately before that he was an assistant commissioner at the Metropolitan Police.
A Yorkshireman, Mr Hogan-Howe joined South Yorkshire Police in 1979, where he moved up the ranks working in various departments including vice and traffic.
He led a team responsible for implementing a comprehensive reorganisation of the force.
He has an MA in law from Oxford University and a diploma in applied criminology from Cambridge University.
Jon Stoddart is responsible for Durham's 2,500 strong workforce
He was born in Tyneside and spent 16 years with Northumbria Police.
During his time in Northumbria, Mr Stoddart worked as staff officer to the then chief constable, Sir John Stevens. Sir John led three investigations into allegations of security forces misconduct in Northern Ireland.
Mr Stoddart was an assistant chief constable in Lincolnshire before before joining the Durham force as deputy chief constable in 2003.
He has run the force since 2005.
Matt Baggott worked in London for 20 years
Leicestershire Constabulary chief Matt Baggott narrowly missed out on becoming head of the West Midlands police earlier this year.
He is a strong advocate of the type of community-style policing favoured by the Northern Ireland Policing Board, the PSNI's independent scrutiny body which will ultimately select Sir Hugh's replacement.
He spent the first 20 years of his service in the Metropolitan Police and later became assistant chief constable in the West Midlands.
He worked with former PSNI Chief Constable Sir Ronnie Flanagan on the National Review of Policing.
He is president of the Christian Police Association, and vice president of the National Association of Police Chaplains.
Paul West is an Oxford graduate
Mr West began his police career with Durham Constabulary in 1979 after completing a physics degree at Oxford University.
After rising through the ranks in Durham he was appointed assistant chief constable for Thames Valley Police in 1998.
In the same year he graduated from Durham University, with an MA in Human Resource Management and Development.
In 2003 he took up the post of chief constable of West Mercia Constabulary.
Jim Gamble is the only candidate from Northern Ireland
The only candidate from Northern Ireland, he is the Chief Executive of the Child Exploitation and Online Protection centre (CEOP).
CEOP is a UK-wide police unit which seeks to protect children from sexual abuse. Much of its work is focused on the internet.
He previously worked for the PSNI, reaching the rank of superintendent.
He joined its predecessor, the Royal Ulster Constabulary, in 1982 and was a senior Special Branch officer in Belfast.
He moved to the National Crime Squad, which deals with serious and organised crime, in 2001.
There he formed an online paedophile investigation team before taking up the top job with CEOP when it was formed in 2005.
He has a black belt in Ju Jitsu.