Professor Marcelo F. Aebi of the University of Lausanne and his team have produced an important report recently on the situation of foreign national offenders in the prison and probation setting in Europe, based on their SPACE data for the Council of Europe PC-CP.
Foreign offenders in prison and probation in Europe; Trends from 2005 to 2015 (inmates) and the situation in 2015 (inmates & probationers), dated 3rd December 2018, consists of a descriptive longitudinal study presenting the data currently available on the number of foreigners in prison populations and under the supervision or care of probation agencies in the 47 member states of the Council of Europe.
View the reports here: www.coe.int/prison