You'll find this on our home page and increasingly on web sites aimed at children and young people. When you click the button you'll see a range of options including one to make a report to CEOP about something which has given you cause for concern.
You can watch a short clip about using the button here.
You can download a program from the ThinkUKnow website which places a small animated character onscreen. If you child sees something which upsets them they can click on Hector and he will cover the screen until you can step in and help.
You'll find the button available to download in the 5-7 Goodies section of the web site.