The wife of an Angolan national who collapsed and died while being deported from the UK has called for G4S, the firm that transported him, to face legal action.
Father-of-five Jimmy Mubenga, 46, became ill as his plane was preparing to leave Heathrow Airport in October 2010, and died later in hospital.
On Tuesday the CPS announced that three civilian guards who escorted him will face no action.
To bring a prosecution for gross negligence manslaughter, it would need to be proved that the guards' actions were "more than a minimal" cause of his death. Mubenga, a father of five, died from cardio respiratory collapse after he was restrained.
Mr Mubenga's wife, Makenda Adrienne Kambana, called for G4S to be "answerable to the law".
“We are distraught my husband has been taken away from me and my children have lost their father. He was crying for help before he was killed. We can’t understand why the officers and G4S are not answerable to the law as we or any other member of the public would be," she said in a statement.
The family's solicitor, Mark Scott, said the decision not to prosecute was "deeply troubling".
“The family are devastated that the circumstances of Mr Mubenga’s death and the people restraining him will not be called to explain their actions in criminal proceedings.
"The DPP’s decision not to prosecute is deeply troubling. The evidence is that Mr Mubenga died after crying for help whilst under restraint. This is not capable of being determined behind closed doors without a full examination of the witnesses and the medical evidence.
"It is a surprise and shock that the DPP has not learned the lessons of earlier decisions and still sees fit to act as judge and jury rather than allowing the normal path of criminal justice to be followed.”
Senior Crown advocate for the CPS, Gaon Hart, said that he had considered whether there was enough evidence to charge the guards or their employer G4S Care and Justice Services UK Limited.
He said: "After very careful consideration of all the evidence, and consultation with medical experts and experienced counsel, I have concluded that there is insufficient evidence to bring any charges for Mr Mubenga's death.
"These conclusions are reached in accordance with the Code for Crown Prosecutors which states that I cannot bring a prosecution unless there is sufficient evidence for a realistic prospect of conviction."