TikTok is to be investigated by the UK’s data protection watchdog, which is looking into whether social media algorithms are serving up inappropriate or harmful content to children.

Growing concerns over how social media platforms are using data generated by children’s online activity have prompted the Information Commissioner’s Office (ICO) to launch an investigation into the Chinese platform, along with the forum site Reddit and the image-sharing site Imgur.

It will look at how TikTok uses the personal information of 13- to 17-year-olds to deliver content recommendations to them, and also examine Reddit and Imgur’s use of age assurance measures, such as how they estimate or verify a child’s age, which can then be used to tailor their experience on the platform.