Authored by Plymouth Moor MP Fred Thomas, the letter highlights concerns that children are “anxious, unhappy and unable to focus on learning” due to unregulated social media platforms.
The MPs argue that the onus for preventing underage access should be placed on technology companies rather than parents to protect young people's mental health.
Labour leader Sir Keir Starmer has indicated that “all options are on the table” regarding further protections for children on social media, including a potential under-16s ban.
However, charities such as the NSPCC and the Molly Rose Foundation have cautioned against a blanket ban, warning it could create a “false sense of safety” and drive children to less regulated online spaces.