In August 2014, Sir Cliff Richard’s home was raided by South Yorkshire Police.
Later that month, the 75-year-old singer voluntarily flew back to the UK to be questioned twice by detectives.
This was part of an investigation over an historic allegation that Sir Cliff sexually assaulted a schoolboy at a religious rally in 1985.
Sir Cliff was never arrested.
The Crown Prosecution Service (CPS) has now confirmed today that they have been passed a file of evidence by South Yorkshire Police and will now decide whether there is a realistic prospect of conviction.
A CPS spokesman told the BBC: "We have received a full file of evidence from South Yorkshire Police.
"We will now carefully consider its contents in line with the Code for Crown Prosecutors, in order to establish whether there is sufficient evidence to provide a realistic prospect of conviction, and whether it is in the public interest to do so."
A South Yorkshire Police spokeswoman added: "Investigation files relating to allegations of non-recent sexual abuse involving a 75-year-old man have been handed over to the CPS.
"The CPS will now consider the matter and South Yorkshire Police awaits their decision."
Sir Cliff has always denied the allegations made against him, saying last year that they were “absurd and untrue” and he had “never, in my life, assaulted anyone”.
He also took to Facebook to thank fans for their support, insisting that he is determined to prove his innocence.
The post read: "Hi everyone, this is just a brief message to thank all of you who have shown support, including those in the Press.
"I wanted to let you know that I'm doing ok and it goes without saying that I fully intend to clear my name.
"Just to be absolutely clear, the allegation is completely false and I will continue to cooperate with the police should they wish to speak to me again.
"Once again ... many thanks! (sic)"
Speaking to the press earlier today, his spokesman said: “It would be inappropriate to comment while the matter is under review.”