[holding answer 3 December 2007]: All police officers are entitled to retire after 25 years service (and on full pension after 30 years) unless they are suspended from duty as a result of an investigation into their conduct, when they can retire before the procedures have been concluded only with the agreement of the chief officer or the relevant police authority depending on their rank. The provisions relating to this are contained in regulation 14 and the determination at annex D of the Police Regulations 2003. Guidance, which is available to police forces and police authorities, is contained in the Home Office Guidance on Police Unsatisfactory Performance, Complaints and Misconduct Procedures; there is further clarification of the provisions relating to retirement by officers under investigation/suspension in Home Office circulars 55/2003 and 8/2005, which are available on the Home Office website.