European Communities Select Committee of the House of Lords (1999年3月2日). “Select Committee on European Communities Seventh Report - Part 4: Opinion of the Committee” (英語). The United Kingdom Parliament. 2010年5月1日閲覧。 “We believe that in the three major areas of Schengen?border controls, police co-operation (SIS) and visa/asylum/immigration policy?there is a strong case, in the interests of the United Kingdom and its people, for full United Kingdom participation.”