Prior to the 2015 United Kingdom general election, 2015 both the opposition Labour Party and the governing Conservative Party said that, if elected, they would legislate on the issue.
Labour said that it would introduce mandatory filters based on BBFC ratings if it believed that voluntary filtering by ISPs had failed.
Legitimate sites are regularly blocked by the filters of some UK ISPs and mobile operators.
In December 2013 the UK Council for Child Internet Safety met with ISPs, charities, representatives from government, the BBFC and mobile phone operators to seek ways to reduce the blocking of educational advice for young people.
Home Safe was praised by Cameron and is controlled and operated by the Chinese company Huawei.
Cameron said ISPs should choose their own preferred technical solution, but would be monitored to ensure filtering was done correctly.
In May 2015, a leaked Council of the European Union document on the topic of net neutrality suggested users would have to opt into blocks, rather than opt out as per the current UK government's plans.
Categories blocked across the major ISPs include: Dating, Drugs, Alcohol and Tobacco, File sharing, Gambling, Games, Pornography, Nudity, Social networking, Suicide and Self-harm, Weapons and violence, Obscenity, Criminal Skills, Hate, Media Streaming, Fashion and Beauty, Gore, Cyberbullying, Hacking and Web-blocking circumvention tools The idea for default filtering originated from manifesto commitments concerning "the commercialisation and sexualisation of childhood" given by the parties forming the Cameron–Clegg coalition government in 2010.These rules require that all internet traffic has to be treated equally, without blocking or slowing down certain data.Net neutrality guidelines were announced in August 2016 by the Body of European Regulators of Electronic Communications.However, the requirement that a UK government adheres to EU rules on net neutrality may disappear at some point in future when the United Kingdom leaves the European Union.Wide-scale inadvertent 'overblocking' has been observed since ISP default filtering was introduced at the end of 2013.
In July 2014 the Open Rights Group launched an independent checking tool uk, a revamp of their mobile blocking site to report details of blocking on different fixed line ISPs and mobile providers.