Historically, intellectual disability (ID) has been viewed as a key determinant of offending behaviour. The evidence supporting a relationship between offending and intellectual functioning (IQ) in the general population is solid. Follow-up studies of offenders with ID have reported recidivism rates of up to 72%. The evidence for the effectiveness of interventions for offending by people with ID is limited but has been building steadily over recent years. Despite this, there is only very limited outcome research supporting interventions for those with ID who set fires. To date there has been one case study, two small case series and one pre-post-intervention outcome study that have provided some evidence that broadly cognitive-behavioural interventions can help with fire interest and attitudes and emotional problems associated with fire-setting behaviour in these clients. There has also been some progress in the development of risk assessments to help evaluate clients' progress in treatment and rehabilitation.