The government's inquiry into allegations that British security services were complicit in torture and rendition has been dealt a blow after the major human rights groups, alleged victims and lawyers involved said they will boycott proceedings.

Clare Algar, the executive director of Reprieve which represented former Guantanamo detainee Binyam Mohamed, explains their argument that "the inquiry has been compromised completely by the rules that have been set out".

And Sir Malcolm Rifkind, former foreign secretary and chairman of the Intelligence and Security Committee, outlines his view that "you have to have different rules" when examining top secret information.

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