The NSPCC are calling for social media sites to acknowledge that many of their users are under the age of 18, in order to do more to safeguard their child users.
The comments come as new research by the children's charity found that around half of the UK's 11 and 12-year-old regularly use social media, and of these, a quarter said they had been upset by something on it.
More top news
Cloudy for many with hill fog in places.
The deactivation of a Second World War bomb recently discovered in Paris will cause major disruption to Eurostar services on Sunday.
Former Chancellor of the Exchequer George Osborne has told ITV News the Prime Minister should take no-deal Brexit off the table.