submissions to SIAC and cross-examine witnesses when an appellant is excluded and make written submissions (rule 35), but may not without the directions of SIAC communicate with an appellant or his lawyer or anyone else once the closed material has been disclosed to him (rule 36). Rule 44(3) provides that SIAC “may receive evidence that would not be admissible in a court of law”. The general rule excluding evidence of intercepted communications, now found in section 17(1) of the Regulation of Investigatory Powers Act 2000, is expressly disapplied by section 18(1)(e) in proceedings before SIAC. SIAC must give written reasons for its decision, but insofar as it cannot do so without disclosing information which it would be contrary to the public interest to disclose, it must issue a separate decision which will be served only on the Secretary of State and the special advocate (rule 47). The appellants and the proceedings 8. Of the 10 appellants now before the House, all save 2 were certified and detained in December 2001. The two exceptions are B and H, certified and detained in February and April 2002 respectively. Each of them appealed against his certification under section 25. Ajouaou and F voluntarily left the United Kingdom, for Morocco and France respectively, in December 2001 and March 2002, and their certificates were revoked following their departure. C’s certificate was revoked on 31 January 2005 and D’s on 20 September 2004. Abu Rideh was transferred to Broadmoor Hospital under sections 48 and 49 of the Mental Health Act 1983 in July 2002. Conditions for his release on bail were set by SIAC on 11 March 2005, and on the following day his certificate was revoked and a control order (currently the subject of an application for judicial review) was made under the Prevention of Terrorism Act 2005, enacted to replace Part 4 of the 2001 Act. Events followed a similar pattern in the cases of E, A and H, save that none was transferred to Broadmoor and notice of intention to deport (currently the subject of challenge) was given to A and H in August 2005, since which date they have been detained. The control orders made in their cases were discharged. B’s case followed a similar course to A’s, save that he was transferred to Broadmoor under sections 48 and 49 of the 1983 Act in September 2005. In the case of G, bail conditions were set by SIAC in April 2004 and revised on 10 March 2005. His certificate was revoked and a control order made under the 2005 Act on 12 March 2005. He was given notice of intention to deport (which he is challenging) on 11 August 2005, and he has since been detained. His control order was discharged. -4-