Ofcom said since its new powers came into force last summer, it has “launched investigations into more than 90 platforms” and “issued several fines”.
“As a result of our action, age checks to protect children from pornography and other harmful material are now widespread, several high-risk sites are blocked, while child sexual abuse material is being tackled more effectively,” an Ofcom spokesman said.
“This is an industry that’s been unregulated and unaccountable for more than 20 years, and so while significant progress is being made, we’re under no illusion that there is much still to do.
“We will continue to work with urgency to drive change so that children in the UK enjoy a safer life online, and we remain grateful for the support and insights we receive from victims, survivors and bereaved families.”