Mr Gias Uddin
Criminal Defence Solicitor
Director & Founder of Woolfe & Co Solicitors
Understanding how criminal cases work in the United Kingdom is essential for anyone who may find themselves involved in the criminal justice system. Whether you are a victim, a witness, or a defendant, the journey from reporting a crime to receiving a verdict can seem daunting. Having a clear understanding of each stage can help you navigate the process with confidence.
This comprehensive guide has been written by Mr Gias Uddin, Director and Founder of Woolfe & Co Solicitors, a specialist criminal defence firm based in Luton. With years of experience representing clients across England and Wales, Mr Uddin provides expert insights into the criminal justice process. Our team offers 24/7 police station representation and expert Crown Court defence services.
Important: This guide provides general information about how criminal cases work in England and Wales. Every case is different, and if you need legal advice specific to your situation, please contact our criminal defence solicitors for expert guidance.
A complete overview of the criminal justice process in England and Wales
The first step in the criminal justice process
The criminal justice process begins when a crime is reported to the authorities. Anyone can report a crime in the United Kingdom, and it is every citizen's right and responsibility to notify the police when they witness or are a victim of criminal activity.
According to the College of Policing and government guidance, there are several ways to report a crime:
For immediate emergencies where a crime is in progress, life is in danger, or suspects are nearby. This should only be used for genuine emergencies. If you are arrested, you have the right to free legal advice.
For reporting crimes that are not immediate emergencies, such as theft, minor vandalism, or historical offences.
Complete an online crime report form through the police.uk website for non-urgent matters.
Visit a police station with a manned front desk to report a crime in person.
If you have been a victim of hate crime, you can also report it through True Vision, a dedicated online reporting portal for hate crimes.
Need legal advice? If you are unsure whether something constitutes a crime or need guidance on reporting, contact our criminal defence solicitors for confidential advice.
Gathering evidence to build a case
Once a crime has been reported, the police or other investigative bodies will conduct an investigation. Their primary objective is to find evidence to establish what happened and identify those responsible.
During an investigation, police will collect various forms of evidence as outlined by the Crown Prosecution Service (CPS):
Statements from victims and witnesses who can provide accounts of what they saw or experienced. These are crucial for establishing the facts of a case.
The suspect's account of events, which may be obtained through interview under caution at a police station. Learn about our police station coverage.
Footage from security cameras, dashcams, and body-worn cameras that may capture the crime or surrounding events.
Scientific evidence including fingerprints, DNA, blood samples, and other forensic traces found at the scene.
Data gathered from smartphones, tablets, computers, social media, and electronic devices under the Investigatory Powers Act.
Reports from medical professionals, forensic scientists, and other experts who can provide specialist opinions.
For more complex investigations, defence solicitors can provide what is known as 'early advice'. According to guidance from the Law Society, this means working with investigators from an early stage to advise on what evidence to look for.
Early involvement of a criminal defence solicitor can help ensure that the right evidence is gathered, which is crucial for building a fair case. If you are under investigation, you have the right to request legal advice at any stage of the investigation.
Who decides whether to charge a suspect?
After the investigation is complete, a decision must be made about whether to charge the suspect. According to the Crown Prosecution Service (CPS), this decision depends on the seriousness of the alleged offence.
For less serious offences, the police make the charging decision.
The police make the charging decision in approximately two-thirds of all criminal cases. These typically include summary-only offences and minor either-way offences.
For more serious offences, the decision is made by the CPS.
Crown Prosecution Service lawyers review the evidence and decide whether there is sufficient grounds to charge the defendant with a criminal offence.
After the investigation is complete, a decision must be made about whether to charge the suspect. According to the Crown Prosecution Service (CPS), this decision depends on the seriousness of the alleged offence. Our criminal defence solicitors can guide you through this process.
For less serious offences, the police make the charging decision. Learn about magistrates courts.
The police make the charging decision in approximately two-thirds of all criminal cases. These typically include summary-only offences and minor either-way offences.
For more serious offences, the decision is made by the CPS. Learn about Crown Court.
Crown Prosecution Service lawyers review the evidence and decide whether there is sufficient grounds to charge the defendant with a criminal offence.
"Is there enough evidence against the suspect to provide a realistic prospect of conviction?"
"Is it in the public interest to prosecute this person?"
If the case passes both stages, the suspect will be charged with the offence.
If it doesn't pass the test, the suspect will not be charged, and no further action will be taken.
At the Crown Prosecution Service, our role is to ensure that the right person is prosecuted for the right offence. This means carefully reviewing all the evidence to determine whether a charge is appropriate and in the public interest.
If you have been charged with an offence or are awaiting a charging decision, our criminal defence team can advise you on your options. Contact us for expert legal advice.
The plea, trials, and court types
When a case reaches court, the defendant is asked to enter a plea of 'guilty' or 'not guilty' to the offence. This is a critical moment in the criminal justice process, as the defendant's choice will determine how the case proceeds.
If the defendant pleads 'guilty', they are convicted of the crime and will be sentenced immediately or at a later date. Learn about legal aid eligibility.
Important: According to CPS statistics, 76% of defendants prosecuted in Crown Court pleaded guilty last year, meaning there was no need for a full trial. Our criminal case barristers can advise you on your options.
If the defendant pleads 'not guilty', the case will proceed to a full trial where the prosecution must prove the defendant's guilt.
The trial will be held in either the magistrates' court or Crown Court, depending on the nature of the offence.
According to HMCTS guidance, the type of court depends on the seriousness of the offence:
Less serious offences such as motoring offences or public order offences can only be tried in the magistrates' court. These are considered less serious crimes with maximum sentences of 6 months imprisonment.
The most serious offences such as rape, murder, and manslaughter can only be tried in the Crown Court. These carry potentially lengthy prison sentences and require a jury trial.
Offences that fall between the two categories are called 'either way' offences. The magistrates will decide whether the case is suitable for their court based on sentencing powers. However, defendants have the right to elect for Crown Court trial.
Most criminal cases start and are dealt with in the magistrates' court. Decisions are made by:
Maximum sentence: 12 months imprisonment for a single offence.
Cases too serious for the magistrates' court are heard here. Crown Court cases are heard by:
The jury decides whether the defendant is guilty or not guilty.
How criminal trials are conducted in court
When a defendant pleads not guilty, the case proceeds to a full trial. The trial process is designed to ensure fairness to all parties while establishing the truth of what happened, as guided by the HM Courts & Tribunals Service.
According to the Crown Prosecution Service, the trial process follows a structured format:
The CPS prosecutor opens the trial by setting out the charges and the facts of the case.
The prosecution presents its evidence first, followed by the defence if they choose to do so.
Both sides call witnesses who can be questioned (cross-examined) by the opposing counsel.
After all evidence is heard, both prosecution and defence make closing statements.
The magistrates, District Judge, or jury retire to consider their verdict.
During a trial, various types of witnesses may be called to give evidence:
People who saw something happen and can describe what they observed.
Officers who can describe evidence they have found or the circumstances of arrest.
Specialists who provide expert opinions on technical matters related to the case.
Importantly, the defendant does not have to give evidence if they do not want to. In English law, a defendant has the right to remain silent, and the court cannot draw an adverse inference simply from the defendant not testifying. Our criminal defence solicitors can advise you on your rights.
The role of the prosecution is to prove, based on the evidence, that the defendant is guilty. The defence does not need to prove that the defendant is innocent—it is for the prosecution to establish guilt.
To find a defendant guilty, the court must be sure—so satisfied that they are sure—that the defendant is guilty. This is known as being satisfied 'beyond reasonable doubt'.
The final stages of the criminal justice process
After considering all the evidence, the court will reach a verdict. According to the Judiciary of England and Wales, there are only two possible outcomes:
To find the defendant 'guilty', the magistrates, District Judge, or jury must be satisfied so that they are sure that the defendant is guilty. Contact our team if you need advice on your case.
"The standard of proof required is that the court must be sure, so satisfied that they are sure."
"The standard of proof required is that the court must be sure—so satisfied that they are sure."
If the court is not sure that the defendant is guilty, they must find them 'not guilty'. The case against the defendant is then over, and they are free to go.
Note: A 'not guilty' verdict does not mean the defendant is innocent—it simply means the prosecution failed to prove their case beyond reasonable doubt.
When a defendant is found guilty, they will be sentenced by a judge or magistrate. According to the Sentencing Council, courts follow structured sentencing guidelines to ensure consistency.
When sentencing, judges and magistrates follow these guidelines:
Sentencing guidelines set out the minimum and maximum sentences for each offence as defined by law.
The court considers aggravating factors (things that make the offence more serious).
The court considers mitigating factors (things that may reduce the sentence).
The court determines where on the appropriate scale the sentence should fall.
The criminal justice system provides mechanisms for challenging convictions or sentences. According to the government guidance on appeals, there are several ways to challenge a decision:
If convicted in a magistrates' court, the defendant has an automatic right to appeal to the Crown Court, where the case will be reheard by a judge and two magistrates.
If convicted in the Crown Court, a judge in the Court of Appeal must grant permission to appeal. If granted, a panel of judges will decide whether to uphold or overturn the conviction, order a retrial, or change the sentence.
In some serious cases, anyone—including the CPS—can ask for a defendant's sentence to be reviewed if they believe it is too low (unduly lenient).
The Attorney General's Office reviews these cases. If they agree the sentence is too short, they will refer it to the Court of Appeal, where a judge will decide whether to keep the sentence the same or increase it.
Defendants typically have 28 days to lodge an appeal against conviction or sentence. It is crucial to seek legal advice as soon as possible if you wish to appeal.
Common questions about how criminal cases work in the UK
If you have been arrested, are under investigation, or need legal representation, our specialist criminal defence team is here to help.
Written by an experienced criminal defence solicitor
Director & Founder
Woolfe & Co Solicitors
Mr Gias Uddin is a highly experienced criminal defence solicitor with many years of practice in criminal law. As the Director and Founder of Woolfe & Co Solicitors, he leads a specialist criminal defence team based in Luton, Bedfordshire, providing expert legal representation across England and Wales.
Qualified solicitor with specialist expertise in criminal defence law
Practises before all courts including Crown Court and Court of Appeal
Established Woolfe & Co Solicitors as a leading criminal defence firm
Based in Luton, serving clients across England and Wales
Sources and government resources for more information
This guide has been prepared using information from the following official sources. For expert legal advice on your case, please contact our criminal defence team.
Official guidance on charging decisions, the two-stage test, and the role of the CPS.
www.cps.gov.ukInformation on court types, trial procedures, and the court system in England and Wales.
www.gov.uk/courts-tribunalsOfficial information on sentencing, verdicts, and judicial procedures.
www.judiciary.ukOfficial sentencing guidelines for England and Wales.
www.sentencingcouncil.org.ukGuidance on legal advice, solicitor services, and the legal profession.
www.lawsociety.org.ukDisclaimer: This guide is for informational purposes only and does not constitute legal advice. Every case is different, and you should consult a qualified criminal defence solicitor for advice specific to your situation.