Registered charity in Cambridge, England
The Internet Watch Foundation (IWF) is a global registered charity based in Cambridge, England. It states that its remit is "to minimise the availability of online sexual abuse content, specifically child sexual abuse images and videos hosted anywhere in the world and non-photographic child sexual abuse images hosted in the UK." Content inciting racial hatred was removed from the IWF's remit after a police website was set up for the purpose in April 2011. The IWF used to also take reports of criminally obscene adult content hosted in the UK. This was removed from the IWF's remit in 2017. As part of its function, the IWF says that it will "supply partners with an accurate and current URL list to enable blocking of child sexual abuse content". It has "an excellent and responsive national Hotline reporting service" for receiving reports from the public. In addition to receiving referrals from the public, its agents also proactively search the open web and deep web to identify child sexual abuse images and videos. It can then ask service providers to take down the websites containing the images or to block them if they fall outside UK jurisdiction.
If found on the open web, it traces where the content is hosted (geographically) and either directly issues a notice to the hosting company to remove the imagery (if hosted in the UK) or works with a network of hotlines and police around the world who follow their own country's process for removing the imagery. More than 99% of all the child sexual abuse images found by IWF are hosted outside of the UK. In this instance, whilst work to remove the imagery takes place, IWF places the web address on its URL List for partners to block the content.
Aside from the IWF URL List, the IWF has developed many services which may be taken by internet companies to help stop the spread of child sexual abuse imagery online.
The IWF operates informal partnerships with the police, government, public, and internet companies across the world. Originally formed to police suspected child pornography online, the IWF's remit was later expanded to cover criminally obscene material, though this was removed from the IWF's remit in 2017.
The IWF takes a strong stance against the term 'child pornography' and on its website cites "we use the term child sexual abuse to reflect the gravity of the images and videos we deal with. Child pornography, child porn and kiddie porn are not acceptable descriptions. A child cannot consent to their own abuse".
The IWF is an incorporated charity, limited by guarantee, and largely funded by voluntary contributions from UK communications service providers, including ISPs, mobile phone operators, Internet trade associations, search engines, hardware manufacturers, and software providers. It also currently receives funding from the European Union by comprising one-third of the UK Safer Internet Centre.
The IWF is governed by a board of trustees which consists of an independent chair, six non-industry representatives, three industry representatives plus one co-opted independent representative with a specialism in human rights. The Board monitors and reviews IWF's remit, strategy, policy and budget to enable the IWF to achieve its objectives. The IWF operate from offices in Vision Park, near Cambridge.
It has been criticized as an ineffective quango that does not deserve its charity status, for producing excessive numbers of false positives, for the secrecy of its proceedings, and for poor technical implementations of its policies that have degraded the response time of the whole UK Internet.
IWF claims to have succeeded in reducing the percentage of the worldwide child sexual abuse images that are hosted in the UK from 18% in 1996 to 0.04% in 2018.
History.
Background.
During 1996, the Metropolitan Police told the Internet Service Providers Association (ISPA) that the content carried by some of the newsgroups made available by them was illegal, that they considered the ISPs involved to be publishers of that material, and that they were therefore breaking the law. In August 1996, Chief Inspector Stephen French, of the Metropolitan Police Clubs &amp; Vice Unit, sent an open letter to the ISPA, requesting that they ban access to a list of 132 newsgroups, many of which were deemed to contain pornographic images or explicit text.
 ;templatestyles src="Template:Blockquote/styles.css" / ;This list is not exhaustive and we are looking to you to monitor your newsgroups identifying and taking necessary action against those others found to contain such material. As you will be aware the publication of obscene articles is an offence. This list is only the starting point and we hope, with the co-operation and assistance of the industry and your trade organisations, to be moving quickly towards the eradication of this type of newsgroup from the Internet ... We are very anxious that all service providers should be taking positive action now, whether or not they are members of a trade association. We trust that with your co-operation and self regulation it will not be necessary for us to move to an enforcement policy.
The list was arranged so that the first section consisted of unambiguously titled paedophile newsgroups, then continued with other kinds of groups which the police wanted to restrict access to, including "alt.binaries.pictures.erotica.cheerleaders" and "alt.binaries.pictures.erotic.centerfolds".
Although this action had taken place without any prior debate in Parliament or elsewhere, the police, who appeared to be doing their best to create and not simply to enforce the law, were not acting entirely on their own initiative. Alan Travis, Home Affairs editor of the newspaper "The Guardian", explained in his book "Bound and Gagged" that Ian Taylor, the Conservative Science and Industry Minister at the time, had underlined an explicit threat to ISPs that if they did not stop carrying the newsgroups in question, the police would act against any company that provided their users with "pornographic or violent material". Taylor went on to make it clear that there would be
calls for legislation to regulate all aspects of the Internet unless service providers were seen to wholeheartedly embrace "responsible self-regulation".
The ISP Demon Internet regarded the police request as "unacceptable censorship"; however, its attitude annoyed ISPA chairman Shez Hamill, who said:
 ;templatestyles src="Template:Blockquote/styles.css" / ;We are being portrayed as a bunch of porn merchants. This is an image we need to change. Many of our members have already acted to take away the worst of the Internet. But Demon have taken every opportunity to stand alone in this regard. They do not like the concept of our organisation.
Following this, a tabloid-style exposé of Demon Internet appeared in the "Observer" newspaper, which alleged that Clive Feather (a director of Demon) "provides paedophiles with access to thousands of photographs of children being sexually abused".
During the summer and autumn of 1996 the UK police made it known that they were planning to raid an ISP with the aim of launching a test case regarding the publication of obscene material over the Internet. The direct result of the campaign of threats and pressure was the establishment of the Internet Watch Foundation (initially known as the Safety Net Foundation) in September 1996.
A report by IWF published in July 2024, revealed a significant increase in AI-generated child sexual abuse material (CSAM) online. During a 30-day review of a dark web forum, the IWF found 3,512 AI-created CSAM images and videos, a 17% rise from a similar review in fall 2023. The IWF observed that most cases involved manipulating existing CSAM or adult pornography by superimposing a child's face. A few instances involved entirely AI-made videos, which were still of basic quality. Their study found 12,000 new AI-generated images on a dark web forum, with 90% being realistic enough to be prosecutable under UK laws. The IWF is advocating for legal changes to criminalize the creation and distribution of AI-generated CSAM. 
Foundation of IWF.
Facilitated by the Department of Trade &amp; Industry (DTI), discussions were held between certain ISPs, the Metropolitan Police, the Home Office, and a body called the "Safety Net Foundation" (formed by the Dawe Charitable Trust). This resulted in the "R3 Safety Net Agreement", where "R3" referred to the triple approach of rating, reporting, and responsibility. In September 1996, this agreement was made between the ISPA, LINX, and the Safety Net Foundation, which was subsequently renamed the Internet Watch Foundation. The agreement set requirements for associated ISPs regarding identifiability and traceability of Internet users; ISPs had to cooperate with the IWF to identify providers of illegal content and facilitate easier traceability.
Demon Internet was a driving force behind the IWF's creation, and one of its employees, Clive Feather, became the IWF's first chair of the Funding Board and solicitor Mark Stephens the First Chair of the IWF's Policy Board. The Policy Board developed codes, guidance, operational oversight and a hotline for reporting content.
The Funding Board, made up of industry representatives and Chair of Policy Board, provided the wherewithal for the IWF's day-to-day activities as set down and required by the Policy Board.
After three years of operation, the IWF was reviewed for the DTI and the Home Office by consultants KPMG and Denton Hall. Their report was delivered in October 1999 and resulted in a number of changes being made to the role and structure of the organisation, and it was relaunched in early 2000, endorsed by the government and the DTI, which played a "facilitating role in its creation", according to a DTI spokesman.
At the time, Patricia Hewitt, then Minister for E-Commerce, said: "The Internet Watch Foundation plays a vital role in combating criminal material on the Net." To counter accusations that the IWF was biased in favour of the ISPs, a new independent chairman was appointed, Roger Darlington, former head of research at the Communication Workers Union.
The website.
The IWF's website offers a web-based government-endorsed method for reporting suspect online content and remains the only such operation in the United Kingdom. It acts as a Relevant Authority in accordance with the Memorandum of Understanding (MOU) concerning Section 46 of the Sexual Offences Act 2003 (meaning that its analysts will not be prosecuted for looking at illegal content in the course of their duties). Reports can be submitted anonymously. According to the IWF MOU "If potentially illegal content is hosted in the UK the IWF will work with the relevant service provider and British police agency to have the content 'taken down' and assist as necessary to
have the offender(s) responsible for distributing the offending content detected." Potentially illegal content includes:
However, almost the whole of the IWF site is concerned with suspected images of child sexual abuse with little mention of other criminally obscene material, also within their remit. Images judged by the IWF using UK law to be images of child sexual abuse are blocked.
The Government said that the IWF would also be handling images of adult "extreme pornography", which became illegal for people in the UK to possess on 26 January 2009. This has not been part of IWF's remit since 2017. The IWF includes "extreme pornography" as an example under "criminally obscene content", meaning that they will report material hosted in the UK, or uploaded by someone in the UK, but regarding blocking sites "with those categories, our remit will only go so far as to refer sites hosted in the UK to the appropriate authorities."
The IWF states that it works in partnership with UK Government departments such as the Home Office and the DCMS to influence initiatives and programmes developed to combat online abuse.
They are funded by the European Union and the online industry. This includes Internet service providers, mobile operators and manufacturers, content service providers, telecommunications and filtering companies, search providers and the financial sector as well as blue-chip and other organisations who support the IWF for corporate social responsibility reasons.
Through their "Hotline" reporting system, the organisation helps ISPs to combat abuse of their services through a "notice and take down" service by alerting them to any potentially illegal content within their remit on their systems and simultaneously invites the police to investigate the publisher.
The IWF has connections with the Virtual Global Taskforce, the Serious Organised Crime Agency and the Child Exploitation and Online Protection Centre.
Management.
In September 2024, the IWF appointed Derek Ray-Hill as interim CEO following departure of Susie Hargreaves from September 2011 to July 2024.
In November 2017, the IWF appointed Andrew Puddephatt as independent chair.
Cross-border aspects.
The IWF passes notifications of suspected child sexual abuse images and