Detective career guide
Detectives investigate serious and complex crimes by gathering evidence, interviewing witnesses and preparing cases for court.
Career guide reviewed by Certyz · October 2026
Entry routes vary by employer and role. Compare the options below before deciding what to research next.
What does a Detective do?
Detectives investigate serious and complex crimes by gathering evidence, interviewing witnesses and preparing cases for court.
- Police stations
- Crime scenes
- Interview rooms
- Courts
- Police forces
- National Crime Agency
- Specialist investigation units
How to become a Detective
Detectives usually begin as police officers before progressing into criminal investigation roles.
Police officer qualification followed by specialist detective training.
- Degree apprenticeship
- Apprenticeship
- Direct employment or training
Skills and progression for Detective
- Investigation
- Analytical thinking
- Communication
- Attention to detail
- Problem solving
- Detective Sergeant
- Detective Inspector
- Senior Investigating Officer
- Detective Superintendent
- Chief Constable
Check current entry requirements before deciding
This Certyz guide is a starting point. Qualifications, registration rules and apprenticeship availability can change. Confirm the latest requirements with employers, course providers, relevant professional bodies and official careers guidance.
What could the outlook mean for you?
Career opportunities can look different depending on where you live, your preferred route and the subjects and activities you enjoy. Your report brings those factors together rather than giving you a generic answer.
- Regional vacancy and salary intelligence
- Your personal career-match reasoning
- Opportunity strength and market direction
- Alternative careers worth considering