51�Թ�

Ofcom says it has received complaints over potential illegal content on the website, which has not responded to its requests for information.

Ofcom says it requested 4chan's risk assessment in April but has not had any response.

Ofcom has the power to fine companies up to 10% of their global revenues, or £18m - whichever is the greater number.

Ofcom does not specify exactly what this means, but some platforms have been trialling age verification using facial scanning to estimate a user's age.

The UK has its own age verification law, with platforms required to have "robust" age checks by July, according to media regulator Ofcom.