You are seeing this page because you are using a BT service which requires the use of BT DNS Servers and it appears that you are attempting to connect using a DNS server outside of our network.
Our BT Web Protect and BT Parental Controls services both require the use of our BT DNS to keep you safe online.
You may have selected a different server in your network settings or installed an application that uses an alternative service.
Click here to find out how to fix this
To turn off BT Protect or to delete Parental Controls, log in to www.bt.com/mysecurityhub