The UK's Information Commissioner's Office (ICO) is investigating TikTok, Reddit, and Imgur over concerns of data usage related to children.
The investigation will focus on how TikTok uses personal information to deliver content recommendations to 13- to 17-year-olds.
The ICO wants to ensure that these platforms have robust processes to prevent children from being exposed to harmful content or addictive practices.
The regulator will determine if there have been any infringements of data protection legislation and seek representations from the platforms before reaching a final conclusion.