A. AND OTHERS v. THE UNITED KINGDOM JUDGMENT 11 unnecessary to examine the basis for its finding, but there was evidence that “upwards of a thousand individuals from the UK are estimated on the basis of intelligence to have attended training camps in Afghanistan in the last five years”; that some British citizens were said to have planned to return from Afghanistan to the United Kingdom; and that the background material relating to the applicants showed the high level of involvement of British citizens and those otherwise connected with the United Kingdom in the terrorist networks. Lord Bingham continued: “33. ... It is plain that sections 21 and 23 of the 2001 Act do not address the threat presented by UK nationals since they do not provide for the certification and detention of UK nationals. It is beside the point that other sections of the 2001 Act and the 2000 Act do apply to UK nationals, since they are not the subject of derogation, are not the subject of complaint and apply equally to foreign nationals. Yet the threat from UK nationals, if quantitatively smaller, is not said to be qualitatively different from that from foreign nationals. It is also plain that sections 21 and 23 do permit a person certified and detained to leave the United Kingdom and go to any other country willing to receive him, as two of the appellants did when they left for Morocco and France respectively ... Such freedom to leave is wholly explicable in terms of immigration control: if the British authorities wish to deport a foreign national but cannot deport him to country ‘A’ because of Chahal their purpose is as well served by his voluntary departure for country ‘B’. But allowing a suspected international terrorist to leave our shores and depart to another country, perhaps a country as close as France, there to pursue his criminal designs, is hard to reconcile with a belief in his capacity to inflict serious injury to the people and interests of this country. ... ... 35. The fifth step in the appellants’ argument permits of little elaboration. But it seems reasonable to assume that those suspected international terrorists who are UK nationals are not simply ignored by the authorities. When [the fifth applicant] was released from prison by SIAC on bail ... it was on condition (among other things) that he wear an electronic monitoring tag at all times; that he remain at his premises at all times; that he telephone a named security company five times each day at specified times; that he permit the company to install monitoring equipment at his premises; that he limit entry to his premises to his family, his solicitor, his medical attendants and other approved persons; that he make no contact with any other person; that he have on his premises no computer equipment, mobile telephone or other electronic communications device; that he cancel the existing telephone link to his premises; and that he install a dedicated telephone link permitting contact only with the security company. The appellants suggested that conditions of this kind, strictly enforced, would effectively inhibit terrorist activity. It is hard to see why this would not be so. 36. In urging the fundamental importance of the right to personal freedom, as the sixth step in their proportionality argument, the appellants were able to draw on the long libertarian tradition of English law, dating back to Chapter 39 of Magna Carta 1215, given effect in the ancient remedy of habeas corpus, declared in the Petition of Right 1628, upheld in a series of landmark decisions down the centuries and embodied in the substance and procedure of the law to our own day. ... In its treatment of Article 5 of the European Convention, the European Court also has recognised the prime importance of personal freedom. ...