Internet matters website.

https://www.internetmatters.org/?gclid=EAIaIQobChMI2vDk5Mq05AIVDbDtCh0hbAC9EAAYAiAAEgIowvD_BwE

NSPCC website on online safety

https://www.nspcc.org.uk/preventing-abuse/keeping-children-safe/online-safety/

Childnet

https://www.childnet.com/

Safer Internet website.

https://www.saferinternet.org.uk/

Wikipedia page on internet safety.

https://en.wikipedia.org/wiki/Internet_safety

Safety net kids.

http://www.safetynetkids.org.uk/personal-safety/staying-safe-online/