Potential Issues with the Classification of Indecent Images of Children (IIOC)
Classifying IIOC for both Mobile Phone Forensics and Computer Forensics is a daily activity when it comes to Digital Forensics.
What is an indecent image allegation according to UK law?
Indecent image allegations encapsulate both minor and severe offences, depending on the nature and number of images involved. One of the most important factors in determining the outcome of this type of case is how the police and crown prosecution service (CPS) grade the images involved.
With the widespread use of the internet and connected devices, the number of indecent images cases has enormously increased in recent years. As a result, the need for a proper framework and grading process to fairly deal with this proliferation of new cases has become essential in order to deal with all of these cases fairly and equally.
In the latest attempt to add consistency to the grading process, the General Sentencing Council has now introduced a 3-tier system, replacing the outgoing 5-grade system in 2014.
Categories of indecent images:
- Category A – deemed the most severe
- Category B – the mid-range in terms of seriousness
- Category C – the least severe
Each category has a separate list of characteristics used to assist the jury during this process and the deemed categories will set the sentencing boundaries.
What is an Indecent Image Charge?
The Crown Prosecution Service describes prohibited images as the ‘indecent photography of children’, but indecent images can also involve animals. The prohibitions on indecent images include moving images, animations, video photography and ‘pseudo-photography’.
‘Pseudo-photography’ refers to a generatable image, transformable through computer software. For the purposes of the law, a hand-drawn picture does not constitute an image.
The titles of the offences are broadly broken down into two separate areas – ‘possession’ and ‘making’. The Criminal Justice Act (1988) and Protection of Children Act (1978) describes both as:
- Possession – involving the physical or digital possession of a prohibited image. This could relate to a computer file, printed photography or pseudo-photography.
Although seemingly simple in concept, complications can arise when deeming an individual as ‘in possession of an image’, particularly when it comes to understanding whether or not an image has been deleted.
- Making – offences related to ‘making’ can be just as complicated. Rarely does ‘making’ mean the traditional sense of taking a photograph, causing much confusion.
The process of an image being ‘made’ refers to when it is created. This normally occurs when an image is downloaded or saved to a digital device, either deliberately or accidentally. It means that an indecent image could be ‘made’ without an individual being aware of it. This is often the subject of forensic investigation – further complicated by technologies such as peer-to-peer file sharing.
In reality, ‘making’ offences are split in terms of distribution and production, both of which are unique in terms of potential sentences.
How are indecent images graded under UK law?
Indecent images are graded into one of three categories:
- Category A – considered to be the ‘most severe’ images. The repercussions for indecent image offences within this category are typically the heaviest of all related offences.
Images classed in this category depict gross assault, sadism or bestiality – obscene images involving penetrative sexual activity. This category also extends to all images that depict a child subjected to pain.
Possession of a category A indecent image has a starting point of a year’s custodial sentence, extending to a maximum sentence of 3 years.
Making offences hold much more severe penalties, with starting points for distributing category A images a sentence of 2 years’ imprisonment and production of category A images sentences starting at 6 years in custody. The sentencing for these types of offences will vary depending upon what aggravating and mitigating features the court identifies.
- Category B – under previous guidelines, a clear distinction in severity was drawn from whether or not an adult was present within indecent images. However, the new 3-tier grading system has made this fact irrelevant. Depictions of both non-penetrative sexual assault and explicit sexual activity are both now classed within category B.
Non-penetrative sexual assault refers to acts such as mutual masturbation or any oral sexual activity. In most cases, this definition involves the presence of an adult.
Images involving explicit sexual activity usually depict a child in sexual acts without the presence of an adult. This would include depictions of activities such as masturbation.
Possession of a category B image offences
havea starting point of 26 weeks’ custody.
Distribution and production offences related to this category of image range between 1 to 4 years’ imprisonment.
Category C – indecent images not classed within A or B fall within category C – this is the broad definition supplied by the General Sentencing Council. Category C images depict some sexually suggestive content, either indicatively or in a nudist environment.
Category C images could encompass everything from commercially published images to family photographs. In cases involving these images, it is usually the intentions of the accused individual that are cross-examined, as images are not necessarily sexual in nature.
Sentences for possession of a category C image start at high-level community orders. The production of these images could result in imprisonment for 1 to 3 years. It is notable the severity of ‘making’ offences, even in the lowest category.
Issues of Indecent Image Classification
Offences relating to the possession and/or distribution of indecent images are increasingly common in the 21st century largely due to the development and proliferation of computer technologies and their application in media and communication. Now that images can be captured digitally, stored electronically and transmitted from one (internet connected) user to another, it is important to know what action will be taken when it is suspected someone possesses or distributes indecent images.
A place to begin would be an explanation of how the offences operate and how someone becomes liable under them.
Section 1(1) of the Protection of Children Act 1978 states that:
It is an offence for a person
- To take or to permit to be taken, or to make any indecent photographs or
pseudo- photographsof a child
A person is considered to be a child if they are less than 18 years of age (s45 (1) of the Sexual Offences Act 2003). Previously the legal age of a child was 16; this alteration allows new liability in that the legal age for marriage in the UK is only 16, meaning a married couple would be prevented from possessing any sexual images of one another if either were under the age of 18. Under section
160(A) of the Criminal Justice Act 1988 (inserted by the Sexual Offences Act 2003, s.45 (4)) it will be a defence to prove that at the time of the offence (when charged with possession) and at the time the defendant obtained the image (when it was taken) that the child and the defendant were “married or civil partners or living together in an enduring family relationship”.
A person under the age of 18 is considered to be a child but how would somebody identify the age of someone based purely on an image? Direct evidence of a subject’s age in an indecent image is very difficult to obtain, therefore the determination of age should always be left to the jury (the court’s decision in R v Land  1 Cr App R 301
The act of ‘making’ any indecent image has the effect of extending this offence to cover any access of indecent images with a computer. The case of R. v. Smith (Graham Westgarth)
1 Cr.App.R. 13, CA, stated that downloading an (indecent) image that was capable of being converted into a photograph on to a screen or opening an email attachment is an act of making that image and that no intention to copy it to a hard-drive is necessary (knowledge of the indecent image being a child is required Atkins v DPP; Goodlands v DPP  2 Cr.App.R. 248). When an image is accessed digitally the original image is not removed from its source; a copy is made onto the person accessing the images’ hard-drive (importantly this can happen without any express intention by the user and will be discussed further as part of a defence).
In the simplest terms ‘pseudo-photographs’ are those images which have been altered to show some event or action which has not happened or some circumstance which did not exist e.g. using a composite of two images, a naked adult woman and a non-indecent image of a child to create an image showing a naked child by moving the head of the child onto the woman’s body. The notion of pseudo-photographs is relatively new and has arisen as a consequence of increasingly sophisticated image manipulation software being widely available. The Criminal Justice and Public Order Act 1994 updated the Protection of Children Act 1978, section 7 (which interprets the meaning of terms in the Act for clarification purposes). Section 7 states that a “pseudo-photograph” means an image, whether made by computer-graphics or otherwise howsoever, which appears to be a photograph,” and goes on to say, “If the impression conveyed by a pseudo-photograph is that the person shown is a child, the pseudo-photograph shall be treated for all purposes of this Act as showing a child and so shall a pseudo-photograph where the predominant impression conveyed is that the person shown is a child notwithstanding that some of the physical characteristics shown are those of an adult.” The issue of whether an image is deemed ‘indecent’ should be left to the jury in any particular case based on “the recognised standard of propriety” (R v Stamford  2 Q.B. 391),
- To distribute or show such indecent photographs or pseudo-photographs
Section 1 (2) states that “for purposes of this Act, a person is to be regarded as distributing an indecent photograph if he parts with possession of it
- To have in his possession such indecent photographs or pseudo-photographs with a view to their being distributed or shown by himself or others
It would be insufficient for a defendant to have left indecent images in a location where they were likely to be seen by others, the prosecution would have to show one of his reasons for having them.
in that location was for them to be viewed as a result of them being where they were located (R. v. Dooley (Michael) (Appeal against Conviction)  1 Cr.App.R. 21, CA). In the case of Fellows and Arnold [
- To publish or cause to be published any advertisement likely to be understood as conveying that the advertiser distributes or shows such indecent photographs or
pseudo- photographsor intends to do so.
To prove an offence
Section 1 (4) of the Protection of Children Act 1978 states that:
Where a person is charged with an offence under this subsection it shall be a defence for him/her to prove
- That he/she had a legitimate reason for distributing or showing the photographs or
pseudo photographsor having them in his or her possession
The legitimate reasons for possessing/distributing indecent images are restricted to those people who can prove that it was necessary to do so for the purposes of the prevention, detection or investigation of crime, or for the purposes of criminal proceedings. This defence is intended to allow people instructed to act for the defence or prosecution who need to be able to identify and act on the receipt of an indecent photograph or pseudo-photograph, to deal with such images. This defence will also apply to defence solicitors, police officers, prosecutors, Judges and others who have to deal with indecent images of children in the course of their work.
The guidelines on who will is allowed this defence are outlined in the 2004 Memorandum of Understanding published by the CPS and ACPO and can be found here http://www.cps.gov.uk/publications/agencies/mouaccp.html
- That he/she had not himself seen the photographs or
pseudo photographsand did not know, nor had any cause to suspect them to be indecent.
This defence is available if the defendant had not seen the photographs and did not know them to be indecent and did not have cause to believe them to be indecent. Defendants in cases concerning images on their computer will frequently claim this defence.
Section 160 (1) of the Criminal Justice Act 1988 states that:
It is an offence for a person
- To have any indecent photograph or
pseudo photographof a child in his or her possession
The sequence of events that immediately come to mind would be a computer user purposefully downloading an image and saving it to a hard-drive for further viewing at a later date. Whilst this is no doubt the ideal scenario from a prosecution viewpoint due to the easy forensic trial left to follow, it is quite rare for this to be the case. More likely is that the image will be ‘held’ in the Internet Cache or has been deleted but is still present (although not ‘usable’) somewhere within the computer hard- drive –
Interestingly what appears to be an almost strict liability crime in its wording does most certainly have a mental element. ‘Possession’ in the case of indecent images of children on a hard-drive is said to occur when the user has ‘knowledge’ of the photographs/pseudo-photographs being in his possession (Atkins v Director of Public Prosecutions (DPP)  2 Cr App R 248). Therefore indecent images that have been ‘cached’ cannot be used as proof of possession (as this is an automated process) provided the folder (area in which the images are stored) has not been accessed. Accessing the Internet Cache folder would show knowledge of the ‘cache’ process (if not the image), images stored in a cache will have a creation, modification and last access date, accessing images will update the ‘last access date’ and will display knowledge of the images and therefore possession could be established.
The decision in Atkins v DPP has been updated in the case of R. v. Porter (Ross Warwick) 2 Cr.App.R. 25, CA, an image will only be in the possession of the defendant if he had “custody or control of the image at that time. If at the time of possession the image is beyond his control, then…he will not possess it”. ‘Control’ of an image is difficult to determine. The courts were concerned with a defendant deleting an indecent image and still being in possession of it as it is not removed from disk-space until it is completely overwritten. The act of sending a file to a recycle bin and deleting it merely removes the directory or index file which prevents further access of the file until it is randomly overwritten by new information. So
A charge of ‘making’ an indecent image of children could potentially be successful even if possession cannot be proven.
Anyone charged with an offence under s160 (1)(A) will have a defence provided they can prove
- That the subject of the image in question was over 16 years of age and married to the accused
The marriage defence applies provided that at the time of the offence (when charged with possession) and at the time the defendant obtained the image (when it was taken) that the child and the defendant were “married or civil partners or living together in an enduring family relationship”.
Section 160 (2) states where a person is charged with an offence under subsection (1) above, it shall be a defence for him to prove
- That they had a legitimate reason for having the photograph in his or her possession
As with Section 1 of the Protection of Children Act 1978 defence concerning legitimate reasons for possession of indecent images this defence is restricted in its application to those involved in the legal process (see above to the defences under the Protection of Children Act 1978).
- That they had not seen the photograph and did not know or have any cause to suspect it to be indecent
Defendants in cases concerning images on their computer will frequently claim this defence.
- That the photograph was sent to the defendant without any prior request made by them or by a third party and that he did not keep it for an unreasonable amount of time.
The Act does not prescribe what constitutes a ‘prior request’, nor does it define the parameters of ‘unreasonable time’. In particular, it is not clear whether time runs from when the image was received by the computer, or when it was known by a defendant to have been received. Consistent with the necessary mental element, the latter is likely. Some discussion of these issues was undertaken in the R. v. Porter (Ross Warwick) 2 Cr.App.R. 25, CA case, “this provision shows that Parliament intended that persons who inadvertently come into possession of images and get rid of them within a reasonable time are not guilty of the offence of possession. In these circumstances, it would be surprising if Parliament had intended that this defence should not be available to persons who inadvertently come into possession of images on their computers.”
It has been noted that the prosecution has a heavier burden of proof under Section 1 Protection of Children Act 1978 than Section 160 of the Criminal Justice Act 1988 (R v Collier-  1 WLR 843). Since there is a statutory defence to section 160 the prosecution need only prove that the defendant was knowingly in possession of an indecent image of a child and the defendant would then have to prove that he had not seen the image and did not know, or have cause to suspect, that it was an indecent image of a child. Under section 1(1)(a) and (d) however no such statutory defence applies and so the prosecution need to prove not only that the defendant knowingly made an indecent image of a child but also that the defendant knew it
Classification of Indecent Images
Once an image is determined to be indecent and depicting a child it will be assigned a level or ‘grading’ as not every indecent image has the same attributes and therefore is not judged at the same level of severity. The current system of classification originates from the COPINE Scale (
To assist with classification, indecent images can be “graded” on a three-point scale, on 1 April 2014 the Sentencing Council issued revised guidelines for all sexual offences including those concerning indecent images of children. They simplified the images into three categories of seriousness:
Category A – Images involving penetrative sexual activity, sexual activity with an animal or sadism.
Category B – Images involving non-penetrative sexual activity.
Category C – Indecent images not falling within categories A or B.
Offences involving any form of sexual penetration of the vagina or anus, or penile penetration of the mouth (
This scale was adopted by the Sentencing Advisory Panel in 2002 in its sentencing guidelines for cases involving indecent images and is often referred to as the SAP scale (sometimes mistakenly as the older COPINE scale) (the sentencing guidelines will be discussed below).
Incorrect use of the Tanner Scale
As has been discussed earlier the crucial element of any offence involving images is the need for the subject of an image to be a child under the age of 18. Unless the subject of an indecent image was known to the prosecution and it could be proven they were the person depicted within it and were under 18 at the time of the offence, then there will be a problem of classification. The SAP scale exists to help with classification of activity however it does not help with the initial estimation of a subject’s age. It will be the role of the police/prosecution analyst to provide the initial review of any images of interest and outline which of those images are indecent and assign the activity depicted a level on the SAP scale. The probable age of a subject once they have been identified as being less than 18 years old at the time the image was created is under no circumstances an issue for any prosecution or defence expert. The decision in R v Land  1 Cr App R 301, CA makes it clear that any expert witness testimony is inadmissible in relation to determining the age of a child, “a jury is as well placed as an expert (e.g. a paediatrician) to assess any argument addressed to the question whether the prosecution had established that the person depicted in the photograph was a child, and in any event expert evidence would be admissible: expert evidence is admitted only to assist the court with information which was outside the normal experience and knowledge of the judge or jury.”
What is known as the ‘Tanner Scale’ is often referenced as a means of determining the chronological age of somebody from their level of sexual
Regardless of the protestations made by the authors of the Tanner Scale it is to this day being used around the world as
(The full document can be found here)
The idea of improper staging would be an image showing some or all of a person’s genitalia but posed in such a way that a paediatrician would be unable to perform a full examination and review, the most common way this would happen would be pornography. An example of the Tanner Scale being used in an indecent image case comes as recently as 2010. In August 2009, a New York resident returning from Venezuela was charged with possession of child pornography after customs officials discovered his baggage contained two adult videos featuring an adult-film actress Lupe Fuentes. When the case went to trial in April 2010, federal prosecutors presented testimony from a paediatrician who relied on the Tanner scale to conclude that Fuentes was under the age of 18 in the video images. Fuentes was contacted and provided corroborating documents to confirm she was 19 years old—a legal adult—at the time the videos were filmed. The child pornography case was subsequently dismissed and all charges against the defendant were dropped.
The important element here is that whilst images are classified as indecent by the prosecution, this is to highlight the ‘potential’ an image has to be classed as indecent, it is for the jury to decide if the images are indecent by making a determination of the age of any subjects when additional information is not available and it is for the judge to direct the jury that this is the case. It is not uncommon for a prosecution analyst to state the age of a subject alongside the description of the activity shown when reviewing indecent images, without having any further information as to the identity of the subject, the statement of age is inadmissible as evidence in court proceedings.
Sentencing in an Indecent Image case can carry very heavy penalties or be comparatively light; it operates to not unduly punish those beyond the gravity of offence they have committed. It is worth noting that even in cases where a potential punishment could be rather minor (in relative terms) most defendants will resist making ‘guilty’ pleas due to the stigma of being placed on the sex offenders register in the UK. Without a proper understanding of the various offences and
Due to the inherent seriousness of being on the register, it is not always viewed as being in the interests of justice to have someone under the age of 18 placed on it for an offence under the Protection of Children Act 1978 (‘making’ an Indecent Image) or the Criminal Justice Act 1988 (‘possession’ of an Indecent Image). An obvious issue with making/possessing indecent Images of children arises from the modern proliferation of mobile telephones and the (sexual) experimentation of teenagers; what punishments should be imposed on a young person who
This recommendation is supported by the Sentencing Advisory Panel in that in the guidelines published with an aim to assist the Magistrates Court have the following provision, “In accordance with section 80 and schedule 3 of the Sexual Offences Act 2003, automatic notification requirements apply upon conviction to an offender aged 18 or over where the offence involved photographs of children aged under 16.” The obligation of sex offender registration is only mandatory upon the conviction of somebody over the age of 18, those classed as children themselves are often placed on the register but some deliberation on this matter is permitted before a decision is made.
The current guidance on sentencing has been outlined by the Sentencing Advisory Panel in two separate documents; the sentencing guidelines to the Magistrates Court and the guidelines on sentences for all offences under the Sexual Offences Act 2003 which are found here
A range of sentences can be passed depending upon the seriousness of the offence and where it would fit within the SAP scale. There are certain principles which apply when considering sentencing.
- For obvious reasons pseudo-photographs generally should be treated less seriously than real photographs.
- Starting points for sentencing for possession of indecent photographs should be higher where the subject of the indecent photograph(s) is a child under 13.
- If an offender possesses only a few indecent photographs, none of which includes sadism or penetration of, or by, an animal (‘Level 5’ in the SAP scale); and the images are of children aged 16 or 17; and the photographs are retained solely for the use of the offender then the courts are permitted to recommend a lower sentence, (the fact that the subject of the indecent photograph(s) is aged 16 or 17 has no impact on sentencing starting points where the activity depicted is at level 5).
- Courts should consider making an order disqualifying an offender (adult or juvenile) from working with children regardless of the sentence imposed.
- Courts should consider making an order for the forfeiture of any possessions (for example, computers or cameras) used in connection with the commission of the offence.
There are also mitigating and aggravating factors which will affect the weight of a sentence: Mitigating factors
- A few images held solely for personal use
- Images viewed but not stored
- A few images held solely for personal use and it is established both that the subject is aged 16 or 17 and that he or she was consenting
shownor distributed to others, especially children Collectionis systematically stored or organised, indicating a sophisticated approach to trading or a high level of personal interest
- Images stored, made available or distributed in such a way that they can be inadvertently accessed by others
- Use of drugs, alcohol or other substance to facilitate the offence of making or taking
- Background of intimidation or coercion
- Threats to prevent victim reporting the activity
- Threats to disclose victim’s activity to friends or relatives
- Financial or
It is important to remember these guidelines are just that, guidance for those unsure of how to proceed in terms of how heavy a sentence should be when someone is found guilty for these offences, the court is not bound by any precedent as to sentencing provided it is within the maximum allowable sentence (otherwise it could be appealed). As such it is not possible to give a definite answer as to exactly what a sentence will be should a defendant be found guilty. Using the guidelines will give an indication as to the ‘likely’ sentence depending upon what exactly a defendant is charged with and found guilty of. From the factors listed previously any charges of possessing or ‘making’ Indecent Images judged to be at ‘Level 5’ would automatically lose the option of a lesser sentence, large amounts of images in an organised structure would be an aggravating factor adding to the weight of any sentence (which would likely be a custodial sentence starting at 3 years possibly up to 5 years in length in addition to being placed on the sex offenders register for a number of years). Contrast this with somebody who is found guilty of an offence but had a few images; all of which were at ‘Level 1’ as they were, for example, pictures of someone with whom they had been involved in a relationship (who was 16 or 17) so can show the images were for personal use and there was consent for them to be taken and stored. This person would be subject to the lowest possible punishment, most likely a community order or fine (although as discussed previously, being found guilty of these offences could (depending on age) result in being placed on the sex offenders register and prevented from ever working with children, the effect on a person’s life from these measures could be profound and should not be underestimated).
There are some (deliberately) vague terms in the sentencing guidelines which make it difficult to determine how sentencing in any particular case will operate. How many images would constitute ‘a few’ or a ‘small number’? What would constitute a ‘large quantity’? If a defendant is shown to have one hundred indecent images on a hard-drive after a forensic investigation, is this a ‘large quantity’? What if (as has happened previously in the course of our investigations) the hard-drive has over
250,000 pornographic images; would one hundred now be a ‘large quantity’? The guidelines have been left vague to allow flexibility, giving a fixed value as to how many images are considered ‘a few’ would undoubtedly lead to difficult issues at a later date. These terms are left to the subjective view of the presiding judge in each individual case to determine based upon the facts before them.
Full CPS Guidance on Indecent Images of Children