2003 without a vote, and on 3 March 2004 with a vote. Cases Between 2001 and 2003 sixteen foreign nationals had been detained and held using these powers at Belmarsh. Eight were detained in December 2001, one in February 2002, two in April 2002, one in October 2002, one in November 2002, two in January 2002 and one in October 2003. One further individual has been certified but is detained under other powers. Of the total detained, two have voluntarily left the United Kingdom. The other fourteen remained in detention as of 18 November 2003. The Council of Europe reported in a document dated 23 July 2004 that according to information supplied to their delegation by the authorities, in March 2004, there were fourteen persons certified as suspected international terrorists and deprived of their liberty in the United Kingdom. Twelve of them were being detained exclusively under Part 4 of the Anti-Terrorism, Crime and Security Act 2001, of whom half since December 2001. Appeals The Act did provide a process for appealing to a judicial tribunal against the Home Secretary's decision to detain in each case. However, the government had argued that a special appellate process was needed to deal with these appeals because of the possibility that much of the evidence or information upon which the Home Secretary's suspicions may be based was likely to be sensitive information of a confidential nature whose release to the person detained or the public might compromise intelligence methods, operatives, and other persons. Therefore, the process established by the ATCSA involved special rules of evidence which most notably permitted the exclusion of the detainees and their legal representatives from proceedings. In an attempt to ensure that their rights were safeguarded at these times, special security-vetted "special advocates" were appointed in the place of their legal representatives. However, there is some evidence that these special advocates experienced difficulties effectively protecting their interests, and two of the special advocates subsequently resigned from their positions following the December 2004 ruling of the House of Lords. In October 2002 the Special Immigration Appeals Commission decided that the Home Secretary's derogation was lawful, and that there was indeed a "state of emergency threatening the life of the nation". A series of legal challenges were made in respect of the powers and processes established under the ATCSA and on 16 December 2004, the Law Lords ruled that the powers