Published:
4 December 2025
The Children's Online Safety Tracker (COST) aims to further understand and track UK children’s recalled experiences of being online, including their use and awareness of safety measures and experiences of harmful content or contact.
We conduct this research twice a year using an online panel to sample over 7,000 children aged 8-17 annually. At Wave 1 a pilot was also conducted in schools. Data published for Wave 1 will include responses from the online panel only.
Wave 1
| Document | Wave | Date published |
|---|---|---|
| Technical report | Wave 1 | 4 December 2025 |
| Questionnaire | Wave 1 | 4 December 2025 |
| Data tables | Wave 1 | 4 December 2025 |