WJEC Criminology Level 3 Applied Diploma

This unit covers the journey from crime scene investigation through to prosecution and verdict. You'll develop a thorough understanding of investigative techniques, personnel roles, evidence processing, and the legal frameworks that govern criminal cases in the UK.

Pro tip: As you study this unit, collect real case examples for each section. Case studies are essential for exam success and will help you demonstrate your understanding in practical contexts.

Throughout this guide, we'll break down complex legal concepts into manageable chunks, making it easier to learn and apply these ideas in your assessments.

Topic 1: Criminal Investigations

Ever wondered how crimes actually get solved? This topic explores the people and techniques that make investigations work. To succeed, you need to understand four key areas:

Personnel effectiveness is about evaluating who does what in criminal investigations. You'll need to assess CSIs, forensic scientists, police officers, CPS staff and pathologists against factors like cost, expertise and availability. Think about why the right people need to be in the right roles at the right time.

Investigative techniques are the methods used to solve crimes. You should be able to explain forensic techniques, surveillance, profiling, intelligence databases and interview methods across different contexts - from crime scenes to laboratories. Consider how these techniques work differently for violent crimes versus property crimes or e-crimes.

Remember: For your controlled assessment, you only need to cover 4 investigative techniques, but understand how each technique applies to different situations and crime types.

Evidence processing involves understanding both physical and testimonial evidence. You must explain the journey evidence takes - from collection at the scene through transfer, storage and analysis. Cases like Barry George or Amanda Knox demonstrate how evidence handling can make or break a case.

Individual rights protect everyone involved in investigations. You need to examine how suspects, victims and witnesses are treated from investigation through to appeal. The balance between effective investigation and protecting rights is crucial to fair justice.

Topic 2: Prosecution and Trial

How does a suspect become a convicted criminal? This topic breaks down the legal process after the investigation ends.

The Crown Prosecution Service decides whether to prosecute suspects. You need to explain their charging role (established in the Criminal Justice Act 2003), the Prosecution of Offences Act 1985, and the Full Code Test which includes both evidential and public interest components. The CPS acts as a crucial filter in the justice system.

Trial processes follow a structured journey through the courts. You should describe pre-trial procedures, bail arrangements, plea bargaining, the different courts, and the appeals process. Each person in court has a specific role that contributes to justice being served.

Rules of evidence determine what information can be used in court. You must understand concepts like relevance, admissibility, disclosure requirements, and the hearsay rule with its exceptions. Without proper rules of evidence, fair trials would be impossible.

Exam tip: For each evidence rule, learn at least one case example where it significantly affected the outcome of a trial.

Key influences on case outcomes extend beyond just the evidence. You should assess how media coverage, witness testimony, expert opinions, police conduct, and legal teams affect verdicts. For your assessment, focus on at least four different influences, always supporting your points with case studies.

Laypeople play a vital role in our justice system. Juries and magistrates bring everyday perspective to legal decisions. You need to discuss at least three strengths and weaknesses of having non-professionals involved in determining guilt and innocence.

Topic 3: Review of Criminal Cases

This topic develops your critical thinking skills as you learn to examine case information and draw meaningful conclusions about justice.

Examining validity is about assessing the quality of information from sources like evidence, trial transcripts, media reports, and legal judgments. You'll need to check for bias, distinguish fact from opinion, consider the circumstances and currency of information, and verify accuracy. Think of yourself as a detective of information!

When reviewing cases, always ask yourself: "Is this source reliable?" and "What factors might influence how this information is presented?" Applying these questions to real cases helps develop your analytical skills.

Assessment tip: In your controlled assessment, you must apply these validity checks to the information provided in your brief, not just discuss them theoretically.

Drawing conclusions requires you to make judgments about verdicts and sentences. You should be able to explain concepts like just/unjust verdicts, safe/unsafe verdicts, just/unjust sentencing, and miscarriages of justice. Each conclusion must be supported with relevant case examples.

For your controlled assessment, you'll apply these skills to a specific scenario. You'll need to examine the information provided, check its validity, and draw reasonable conclusions about whether justice has been served. This demonstrates your ability to think critically about complex legal situations.