Internet service providers offer parents bar on pornography
Four leading service providers are to offer customers the option to block adult content at the point of subscription.
BT, Sky, TalkTalk and Virgin will offer the protection for smartphones, laptops and PCs.
It comes as David Cameron on Monday met industry representatives amid concern over sexualisation of children.
The prime minister also launched Parentport - a website to help parents complain about inappropriate content.
And he backed a ban on billboards displaying risque images near schools.