Senior Investigating Officer (SIO) Course

The SIO course takes you through all the stages inherent to an SIO's role: from management and leadership, decision making, writing policy books to the initial response and crime scene management, conducting searches, applying investigative strategies, managing victims, suspects and witnesses, family liaison and conducting death investigations and sudden infant deaths.

Whether you conduct, review or take a professional interest in major and serious crime investigations, this course will be an invaluable training experience. 

The course will form a guide for any officer conducting a serious, complex or major investigation.

Covers everything from decision making and the initial response, setting up and managing an investigation to forensic and physical searching, communications and core investigative strategies, and managing victims, suspects and witnesses.

Includes key points, case studies and checklists, enabling quick reference at critical times during an investigation.




  • Role of the Joint Management Group
  • The role of the SIO
  • Investigative mindset and investigation structure
  • Decision making and the SIO Policy Book

The course would then follow a case study and the class will each conduct the role of SIO maintaining a decision making policy log. 


  • Initial report of an incident, the role of call takers and the recording of the crime
  • Role of the first officers attending
  • Debriefing of staff
  • Role of other Agencies / emergency services
  • Attendance of Crime Scene Examiners and other Specialists
  • Community Impact


  • Identification of scene(s)
  • Approach, cordons and Scene Logs
  • Exhibit recovery
  • Searching and tracking
  • Forensic Support
  • Forensic Strategy
  • Body recovery


  • Identification and handling of witnesses
  • Interview strategy
  • Interview Advisors
  • Witness protection


  • All fast track actions to include
  • CCTV collection and viewing
  • House to house enquiries initial and continued
  • Persons of Interest / Suspects
  • Risk assessment
  • Search Strategy
  • Passive data enquiries, e.g. telephone and financial enquiries
  • Intelligence Strategy
  • Pro-active techniques


  • Identification
  • Family Liaison
  • Background / friends / associates


  • Mortuary procedure and role of Pathologist
  • Role of the Coroner
  • Attendance of other experts
  • Photographs / samples
  • Cause of death
  • Weapons / Injuries
  • Second Post Mortems


  • Initial media release
  • Social media issues
  • Internal multi-agency communications
  • Media Strategy
  • Press Conferences and media appeals
  • Hold back policy


  • Identification / alibi / elimination criteria / motive
  • Intelligence / background / risk assessment
  • Arrest strategy
  • Forensic considerations / samples / clothing / swabs
  • Searches
  • Interview Advisors
  • Interview strategy / disclosure strategy
  • Legislative requirements


  • Investigation set-up. Recording and Management of Actions
  • Location of Major Incident Room
  • Staffing and resources
  • Investigation team roles
  • Administration and Financial issues
  • Reviews


  • Charging and Legal Requirements
  • Case Preparation and evidence presentation
  • Pre- trial issues and the Prosecution process
  • Disclosure of Used, unused and sensitive material
  • Witness protection and court security
  • Finalisation of investigation
  • Cold Case Reviews


  • Child Deaths. Previous agency involvement
  • Deaths in Health Care Settings
  • Domestic Deaths. Previous police involvement
  • Terrorism and the I.S. Threat
  • Kidnap
  • Historical Sexual Abuse


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