Please find below some useful links to help keep your child safe online.
https://www.nspcc.org.uk/preventing-abuse/keeping-children-safe/online-safety/
https://www.getsafeonline.org/safeguarding-children/
https://www.thinkuknow.co.uk/parents/
https://www.nspcc.org.uk/keeping-children-safe/reporting-abuse/dedicated-helplines/protecting-children-from-radicalisation/