To date there have been very few studies of attempted suicide occurring in prison. This study analyses 111 reports of attempted suicide occurring in a one-year period in the prisons of the Midlands and South West regions of England. Unlike the general population, where there are marked differences (age, sex, etc.) between those attempting and those completing suicide, the characteristics for both groups in prison are similar, high risk being associated with youth, with being on remand or recently sentenced, and with a history of mental or physical illness. There is some indication that those in Young Offender Establishments may be more likely to attempt suicide by hanging. The motivation given by the inmates most commonly stated some form of emotional stress relating to poor communication with family or friends, and in this respect they are similar to attempters outside prison.