The English courts have already demonstrated that the US is hiding things (the "redacted" material) and that the UK is being forced by the USA to hide things too.

Binyam Mohammed has already been unlawfully seized transported and confined by the USA, and anyone who claims that Guantanamo detainees were not tortured needs his head examining.

The smear job (that I am ashamed to see Englishmen falling for above) is that because Mohammed came from Ethiopia, is non-white, and is a Muslim, and was accused by the USA, he is bound to be a terrorist and a scrounger.