Regulator publishes codes of practice and warns that largest sites are not following many of its measures

Social media platforms have a “job of work” to do in order to comply with the UK’s Online Safety Act and have yet to introduce all the measures needed to protect children and adults from harmful content, the communications regulator has said.

Ofcom on Monday published codes of practice and guidance that tech companies should follow in order to comply with the act, which carries the threat of significant fines and closure of sites if companies breach it.