A sex attacker acquitted of rape in 1986 will be sentenced for the crime in Windsor, Berkshire following the discovery of conclusive DNA evidence.
Alexander McGuire, 61, was found innocent of the charge against him when he stood trial 25 years ago - despite testimony from his victim who was able to pick out her assailant in an identity parade.
However, forensic evidence gathered during her original medical examination was later re-examined using new techniques and revealed a profile which matched McGuire's DNA.
McGuire was arrested at his home in Greyhound View, Sandy Lane, Bedfordshire, in July 2011 and the original trial verdict was quashed in December that year.
The rapist, to be sentenced at Reading Crown Court, entered a guilty plea in March after detectives concluded the likelihood they had got the wrong man was one-in-a-billion.
McGuire pounced on his victim, who cannot be named for legal reasons, while she was at work at a branch of McDonald's in November 1986.
McGuire was arrested some months after the attack, charged and tried but he was found not guilty on the orders of the judge.
His victim was then 29. Years later, her ordeal was reinvestigated by Thames Valley Police's major crime review team.
Using methods of DNA analysis which were not available to the original investigation team, they were able to pin the crime on McGuire.
Officers applied to the Director of Public Prosecutions for consent for the case to be reinvestigated under double jeopardy legislation contained within the Criminal Justice Act 2003.