All Party Parliamentary Group on Social Integration (2017) Integration Not Demonisation: The final report of the All-Party Parliamentary Group on Social Integration’s inquiry into the integration of immigrants, 25 August 2017
British Transport Police (2017) There When You Need Us: Annual Report 2016/17
Federal Ministry of the Interior, Federal Office for the Protection of the Constitution and Counterterrorism (Bundesministerium für Inneres, Bundesamt für Verfassungsschutz und Terrorismusbekämpfung) (2019), Annual Report on the Protection of the Constitution (Verfassungsschutzbericht 2018)