Objective: To explore the experiences of children and families after a child’s traumatic injury (Injury Severity Score >8). Design: Qualitative interview study. Setting: Two children’s major trauma centres in England. Participants: 32 participants: 13 children with traumatic injuries, their parents/guardians ( n = 14) and five parents whose injured child did not participate. Methods: Semi-structured interviews exploring the emotional, social, practical and physical impacts of children’s injuries, analysed by thematic analysis. Results: Interviews were conducted a median of 8.5 months (IQR 9.3) post-injury. Injuries affected the head, chest, abdomen, spine, limbs or multiple body parts. Injured children struggled with changes to their appearance, physical activity restrictions and late onset physical symptoms, which developed after hospital discharge when activity levels increased. Social participation was affected by activity restrictions, concerns about their appearance and interruptions to friendships. Psychological impacts, particularly post-traumatic stress type symptoms often affected both children and parents. Parents’ responsibilities suddenly increased, which affected family relationships and roles, their ability to work and carry out daily tasks. Rapid hospital discharge was wanted, but participants often felt vulnerable on return home. They valued continued contact with a healthcare professional and practical supports from family and friends, which enabled resumption of their usual lives. Conclusions: Injured children experience changes to their appearance, friendships, physical activity levels and develop new physical and mental health symptoms after hospital discharge. Such challenges can be addressed by the provision of advice about potential symptoms, alternative activities during recovery, strategies to build resilience and how to access services after hospital discharge.