In 2014, the EMCDDA took the decision to carry out a limited follow-up study of the EMCDDA Paper Drug squads: units specialised in drug law enforcement in Europe (EMCDDA, 2013), with the aim of monitoring possible changes and trends in drug supply reduction resulting from law enforcement activities. An abbreviated version of the data collection questionnaire employed in the original study was used for reporting by reference persons from the 28 EU Member States, Norway and Turkey. The reference persons were also given the opportunity to provide additional information and comments. The European drug law enforcement landscape in 2015 is broadly similar to the situation in 2012.

The total number of drug squads in Europe has remained stable (1 187 squads in 2012 versus 1 133 in 2015), as has the number of staff allocated to drug squads. Although the number of law enforcement officers decreased by 10 % between 2012 and 2015 (from 17 720 to 15 870), the total number of staff employed in European drug squads increased slightly (from 19 490 to 20 515 staff members).