The system of justice in England and Wales, in both civil and criminal cases, is (as it is in North America) an adversarial system. In criminal cases there is no such thing as an examining magistrate who tries to discover the real truth about what happened. In formal terms it is not the business of any court to find out ' the truth'. Its job is simply to decide 'yes ' or 'no ' to a particular proposition (in criminal cases, that a certain per son is guilty of a certain crime) after it has heard arguments and evidence from both sides (in criminal cases these sides are known as the defense and the prosecution).

There are basically two kinds of court. More than 90% of all cases are dealt with in magistrates' courts. Every town has one of these. In them, a panel of magistrates (usually three) passes judgment. In cases where they have decided somebody is guilty of a crime, they can also impose a punishment. This can be imprisonment for up to a year, or it can be a fine, although if it is a person's 'first offence' and the crime is not serious, they often impose no punishment at all

Magistrate s' courts are another example of the importance of amateurism in British public life, Magistrates, who are also known as Justices of the Peace (IPs), are not trained lawyers. They are just ordinary people of good reputation who have been appointed to the job by a local committee. They do not get a salary or a fee for their work (though they get paid expenses). Inevitably, they tend to come from the wealthier sections of society and, in times past, their prejudices were very obvious. They were especially harsh, for instance, on people found guilty of poaching (hunting animals on private land) , even though these people sometimes had to poach in order to put food on their families' tables. In modern times, however, some care is taken to make sure that JPs are recruited from as broad a section of society as possible.

Even serious criminal cases are first heard in a magistrate's court. However, in these cases, the JPs only need to decide that there is a prima facie case against the accused (in other words, that it is possible that he or she may be guilty). They then refer the case to a higher court. In most cases this will be a crown court, where a professional lawyer acts as the judge and the decision regarding guilt or innocence is taken by a jury. Juries consist of twelve people selected at random from the list of voters. They do not get paid for their services and are obliged to perform this duty. In order for a verdict to be reached, there must be agreement among at least ten of them. If this does not happen, the judge has to declare a mistrial and the case must start all over again with a different jury. A convicted person may appeal to the Court of Criminal Appeal (generally known just as the Appeal Court) in London either to have the conviction quashed (i.e., the jury's previous verdict is overruled and they are pronounced 'not guilty') or to have the sentence (i.e. punishment) reduced. The highest court of all in Britain is the House of Lords.

The duty of the judge during a tri al is to act as the referee while the prosecution and de fence put their cases and question witnesses, and to decide what evidence is admissible and what is not (what can  or can 't be taken into account b), the jury). It is also , of course, the judge's job to impose a punishment (known as 'pronouncing sentence ') on those found guilt), of crimes.