We describe the trends and severity of deliberate scald injuries from assaults within prisons presenting to Pinderfields Hospital in the United Kingdom. Data were obtained using local records of the International Burn Injury Database. Between 2003 and 2019, the hospital's Department of Plastic Surgery and Burns treated 22 cases from at least seven prisons, with 20 cases occurring in the last 4 years. Boiling water was used in most cases. Other substances included syrups of boiling water and sugar, and hot fat. Mean total body surface area was 2.8%, most commonly the face, neck, shoulders, and anterior chest. National data identified 267 cases with a similar rising trend. These injuries increase logistical and financial burdens on our burns service due to the need for added security and police escorts during treatment. "Copycat attacks" within same prisons, sometime on the same day, raise concerns that incidence of these injuries is likely to increase. Outreach nursing and telemedicine facilities may minimize the challenges during the management period.