You may also fine the following links useful:
Info for parents:
https://saferinternet.org.uk/guide-and-resource/parents-and-carers
 Info for Grandparents:
https://saferinternet.org.uk/guide-and-resource/grandparents
 Info on screen time:
https://saferinternet.org.uk/online-issue/screen-time
 info on Parental controls:
https://saferinternet.org.uk/online-issue/parental-controls
 Useful sites for advice
https://www.nspcc.org.uk/keeping-children-safe/online-safety/