Should it be banned for all? From July, all porn websites must have strict age checks to prevent UK children from accessing them. But some argue that the new rules do not go far enough.
Under-18s set to be blocked from porn
Easy access: Nearly a quarter of five to seven-year-olds in the UK have their own smartphones, Ofcom research suggests. Pornography is easily accessible on most smartphones. Glossary
Pornography - Pictures, videos or text with sexual imagery, made with the intention of causing sexual arousal.
Sexist - Showing prejudice or discriminating against women and girls.
Free speech - The idea that people can say what they think without any fear of being punished or silenced.