MI5 and MI6 are expected to be cleared today of allegations that their agents were complicit in the torture of terror suspects.
The Crown Prosecution Service said a statement would be made "announcing a number of decisions in relation to the investigations into the alleged ill-treatment of detainees".
MI5 and MI6 agents are understood to have been singled out during a four-year long criminal investigation into the treatment of detainees, including UK resident Binyam Mohamed.
Prisoners at Guantanamo Bay have claimed British intelligence officials colluded in their torture while they were being held there, while a number of British Muslims have complained that they were questioned by agents after being tortured in Pakistan, Bangladesh, Afghanistan and Guantanamo Bay.
Others say that they were tortured while being interrogated on the basis of information that could only have been supplied by the United Kingdom.