Following COVID-19, there has been increasing concern about the well-being of children and young people across the United Kingdom; however, our major problem is the lack of robust data. We discuss emerging research capturing the impact of restrictions and experiences of COVID-19 on children and young people. We suggest further and more detailed analysis is urgently required to inform an evidence-based response. We conclude that although most of the UK's kids are probably OK, it is essential that those who are in need of support receive timely and informed intervention.