Sky has confirmed it will now block “adult content” by default for all new broadband customers.
Sky said the move would result in “much greater use of home filters”, but customers could still opt-out if they wanted to.
In 2013, Prime Minister David Cameron said broadband users should face an “unavoidable decision” over whether to enable filters or not. But the move has been criticised by internet rights campaigners.
Sky launched its online content filtering product Broadband Shield in November 2013, but a year later only 3 per cent of its existing customers had opted to switch it on.