This paper explores prisoner and staff views of the current smoking policy in English and Welsh prisons (a partial ban permitting smoking in prison cells) and gauges perceptions of the implications of the forthcoming policy change which will see a total smoking ban within all parts of the institution. Five focus group discussions in one medium security male prison in England were undertaken. Three focus groups were undertaken with prisoners (both smokers and non-smokers) and two focus groups with staff. The findings suggest that smoking is embedded in the fabric of prison life and serves several functions, including alleviating anxiety in prisoners. The current smoking policy was perceived as being a fair policy that both supported smoking and non-smoking prisoners. There were concerns, however, that a total smoking ban would have adverse outcomes for prisoners and staff, including deleterious effects on mental health and the potential for violence. The paper concludes by suggesting that the incoming policy, which sees a total smoking ban in prisons, is laudable, but this research suggests that without careful implementation there may be adverse health and organisational outcomes.