Unwanted-sexual-behaviors (USBs) on Great Britain’s rail network, though often seen as “lesser-harm” incidents, have profound psychological, emotional, and behavioral impacts on victims and witnesses. A national survey reveals these effects, highlighting the traumatizing effect of USBs, even years later. Victims share their dissatisfaction with reporting USBs and the need for empathetic communication in victim recovery and trust in authorities. The study also examines the impact of reassurance callbacks from police. While a single callback enhanced perceptions of safety and police effectiveness, multiple callbacks were favored, suggesting their potential to improve victim support and confidence in law enforcement responses to USBs.