Practice – Hearing. The appellants' extradition to Rwanda was sought to stand trial for offences committed in the course of the civil war. They sought to adduce witness evidence in a closed material procedure or for it to be disclosed only to the third respondent Crown Prosecution Service. The Supreme Court held that there was no basis for recognising or creating a closed material procedure as a new exception to the principle of open inter partes justice. Further, the judge had no special statutory power which could enable her to make a non-disclosure order in relation to the requesting state. However, anonymous evidence could be admitted only if the proceedings were fair.