Sally Walsh, a senior lawyer with the CPS Special Crime Division said:
“The CPS has authorised the Independent Police Complaints Commission to charge Carl Ryan with six separate offences of misconduct in public office.
“It is alleged that between 2010 and 2012, Mr Ryan, who at the time was an officer in the Sapphire unit dealing with rape and sexual assault cases, failed to properly advance the forensic side of investigations on a number of occasions. It is also alleged that Mr Ryan signed the statements of witnesses himself and incorrectly informed a suspect of a decision to prosecute when no such decision had been made.
“The decision to prosecute was taken in accordance with the Code for Crown Prosecutors. We have determined that there is a realistic prospect of conviction and that a prosecution is in the public interest.
“Mr Ryan will appear before Westminster Magistrates’ Court on 18 July 2014.
"Criminal proceedings have now commenced and Mr Ryan has the right to a fair trial. It is extremely important that there should be no reporting, commentary or sharing of information online which could in any way prejudice these proceedings."