The majority of home broadband users are switching off their adult content filters, new research from Ofcom has shown.
A report from the regulatory body found that most subscribers would not decide to use the filter option if given the choice.
Just 6% of BT subscribers have activated the filter, along with 12.4% of Virgin Media customers and 14% of individuals who use TalkTalk.
Sky customers were found to have the highest levels of filtering, with between 30 and 40% of subscribers making the most of this feature.
The government requires all major broadband providers to offer filtering that will block children from accessing sites with adult content or other harmful images.
When new customers set up their internet connection, they are asked whether they want to opt out of the filter, which is switched on by default. Existing customers have also been asked to decide whether they would like to opt out or not.
New broadband customers were the most likely to activate the filters, which is believed to be due to the ease of explaining the feature when setting up the connection, rather than trying to get existing customers to understand.
Another finding of the report was that people are increasingly likely to understand that they are able to filter content, with 57% of parents of 5 to 15-year-olds aware of such filters. Among those parents that do use the filters, 97% said they found them to be useful.
The number of people using the filters has also increased; rising from 21% in 2014 to 26% this year.