According to our report, a quarter (25%) of primary school children (aged 8-12) and 21% of secondary school children (aged 12-14) have been bothered or upset by harmful content such as scams, harassment, horror, and sexual material online. For 8-12 year olds, this most commonly occurred on YouTube (37%) and Roblox (23%), even though Roblox is widely perceived as a child-friendly social gaming environment. For secondary school children (aged 12-14), Snapchat (41%) and TikTok (30%) were identified as the most common platforms where these negative experiences occur. 55% of children aged 8 to 12 did not tell a parent when bothered, confused or upset by harmful content or unsolicited contact, rising to 63% for 12-14 year olds.