The model is introduced by the presumption of guilt. It allows the police force to have the ability to identify those most likely to be guilty through their investigation and interrogations. The model also believes that the police should have the ability to be free from unnecessary legal technicality that will cause prevention during their investigation. Once the police force are able to identify those 'probably guilty', the model will favour an assembly line justice system that will be involved in the prosecution, conviction and correct sentencing for the offender. However, the model does consider of the few innocent people that would have been wrongfully convicted causing a miscarriage of justice and they consider the price worth paying for convicting a large amount of guilty people. The model does not address the causes of crime nor that the crime can be deterred through detection and conviction.

• One theory is Right realism. The model is a right-wing conservative approach to the criminal justice system and the model has a lot in common with the right realist theories of crime. Examples of this include zero tolerances policing strategies. The model favours in providing the police with greater powers in order to investigate and supress crime.

• Another theory to support the model is Functionalism. The crime control model interlinks with Durkheim's functionalist theory which believes that punishment reinforces society's moral boundaries. The main function of justice it to be able to punish those guilty and enables society to express its moral outrage and further strengthen social cohesion.

The model also supports the removal of the 'double jeopardy' rule when facing severe cases such as homicide which was seen in the campaign created by Ann Ming whom successfully managed to abolish the Double Jeopardy rule which allowed her daughter Julie Hogg's murderer, Dunlop, to finally ben convicted. And the model allows the extension of pre-charge detention time of offences of terrorism.

The focus in these cases were to secure a conviction at any cost because the victim's murder provoked strong public reaction and a demand for the case to be solved as quickly as possible. For instance, Colin Stagg. The police felt sure that he was guilty and went to all lengths to secure his conviction for example, the use of undercover surveillance with the honey-trap. In the terms of Barry George, they used the 'bad character' evidence such as him being known to stalk women and had images of himself holding a gun in his home. However, both won their right to appeal which support the due process model. Both their convictions were quashed.

• One theory is the Labelling theory. The due process model uses a liberal approach. The main aim is to stop state agencies like the police from oppressing people especially those innocent. This model links to this theory as the police may be tempted to act illegally in order to obtain evidence which can result in people being harassed as they would have been labelled as 'typical criminals'. The model offers some protection against this because it requires the police to follow lawful procedures and not exceed their powers.

• Another theory is Left realism. The theory argues that the oppressive ‘militaristic policing’ of poor areas can trigger confrontations and make residents unwilling to assist with the police. In the left realist view, the police must follow due process by acting in a lawful and non-discriminatory way if they truly want to fight crime effectively as this involves and depends on the cooperation of the community.

There have been several cases of the defendant being given their statutory legal rights. One example of this is the case of James Bulger and his murderers Thompson under Venables. During the trial, the Home Secretary took into account public petitions demanding the murderer be imprisoned for life which would have made their trial unfair. He refused to take account of their progress and development during detention. The model was used in this case to ensure that a fair trial had occurred by following the European Convention on Human Rights.