Internet censorship in the United Kingdom is conducted under a variety of laws, judicial processes, administrative regulations and voluntary arrangements. It is achieved by blocking access to sites as well as the use of laws that criminalise publication or possession of certain types of material. These include English defamation law, the Copyright law of the United Kingdom, regulations against incitement to terrorism and child pornography.

Current restrictions

British citizens have a negative right to freedom of expression under the common law. In 2000, the United Kingdom required its courts to interpret as far as they can its domestic legislation compatibly with the European Convention, and the guarantee of freedom of expression it contains in Article 10. This was achieved under the Human Rights Act 1998 by requiring courts, if necessary, to strain the meaning of domestic law to be compatible with Convention rights and public authorities also have a duty to act compatibly with these rights. Where courts cannot interpret compatibly, some courts can issue a declaration of incompatibility; however the incompatible domestic legislation remains intact and it is for Parliament to decide whether to amend it to bring it into line with the Convention. Moreover there is a broad sweep of exceptions in the Convention.

Internet censorship in the United Kingdom

The law provides for freedom of speech and press, and prohibits arbitrary interference with privacy, family, home, or correspondence, and the government routinely respects these rights and prohibitions. An independent press, an effective judiciary, and a functioning democratic political system combine to ensure freedom of speech and press. Individuals and groups routinely use the Internet, including e-mail, to express a wide range of views.

Internet censorship in the United Kingdom

Since the mid-2000s there has been a gradual shift toward increased surveillance and police measures in the UK. National security concerns, terrorism and crime, and issues regarding child protection have resulted in the state introducing extensive surveillance measures over online communications as well as filtering and tracking practices. In some cases these are encouraged or required by the state and used by state agencies. In others they are voluntarily implemented by private operators (e.g., internet service providers).

Internet censorship in the United Kingdom

The country was listed among the "Enemies of the Internet" in 2014 by Reporters Without Borders, a category of countries with the highest level of internet censorship and surveillance that "mark themselves out not just for their capacity to censor news and information online but also for their almost systematic repression of Internet users". Other major economies listed in this category include China, Iran, Pakistan, Russia and Saudi Arabia. However years later, they are no longer listed as an "enemy of the internet".

In 2017 the Communications Select Committee set up an inquiry as to whether to, and how to, further regulate the Internet in the UK.

Default network-level blocking by Internet service providers

Current situation

Mobile Internet censorship

UK mobile phone operators began filtering Internet content in 2004 when Ofcom published a "UK code of practice for the self-regulation of new forms of content on mobiles". This provided a means of classifying mobile Internet content to enable consistency in filtering. All major UK operators now voluntarily filter content by default and when users try to access blocked content they are redirected to a warning page. This tells them that they are not able to access an 'over 18 status' Internet site and a filtering mechanism has restricted their access. Categories that are listed as blocked include: adult / sexually explicit, chat, criminal skills, drugs, alcohol and tobacco, gambling, hacking, hate, personal and dating, violence, and weapons. Users who are adults may have the block lifted on request.

Guidelines published by the Independent Mobile Classification Body were used by mobile operators to classify sites until the British Board of Film Classification took over responsibility in 2013. Classification determines whether content is suitable for customers under 18 years old. The default assumption is that a user is under 18.

The following content types are blocked from under 18's: Suicide, self-harm, pro-anorexia and eating disorders Discriminatory language Encouragement of drug use Repeated / aggressive use of the word ‘cunt’ Pornography restrictions Violence and gore restrictions