Safer Internet Centre:
How to set up filters on your home internet to help prevent age inappropriate content being accessed:
If you are struggling, phone your own internet provider and they will be able to discuss the various safety features they have available.
Wider support and advice for parents and carers:
https://saferinternet.org.uk/guide-and-resource/parents-and-carers
Common Sense Media:
You can search Common Sense Media for guides on a variety of platforms, including how to set up parental controls on devices like Xbox one/iphone etc
https://www.commonsensemedia.org/articles/online-safety
You can also search the site for safety reviews on apps, games, and tv shows: https://www.commonsensemedia.org/
It is an American site but is useful in its breadth of content.
Open conversation is best when negotiating online safety with children and young people. Find guidance on these conversations here from the NSPCC
https://www.nspcc.org.uk/keeping-children-safe/online-safety/talking-child-online-safety/
This is a link to a youtube video which is a recording of a webinar held by the Topaz representative who specialises in online safety and CSE.