How cold case detectives and forensic experts brought serial rapist in Leeds to justice

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Groundbreaking advances in forensic science helped police bring serial rapist Raymond Manners to justice.

Officers at the time of the offence police were unable to identify the culprit.

But the case was later reviewed by West Yorkshire Police's Operation Recall team - the unit set up to specifically look at unsolved cases involving sexual assault.

The team spotted similarities between this case and two other unsolved rapes dating back to 1979.

In 2012, the Recall team successfully linked Manners through forensic evidence to the 1979 rapes and he was sentenced to 10 years for the crimes.

He was, however, released without charge in relation to his 1991 offence as the forensic evidence available did not meet the necessary prosecuting criteria.

After advances in forensic techniques and with Manners safely in prison, officers in 2016 again reviewed the 1991 offence.

By using the new profiling technique it was successfully proved that he was well represented in a forensic sample left at the crime scene, with a further seven strands of his DNA identified.

Due to the complexity of the result, however, it was not possible to provide a statistical likelihood of the sample being his.

The decision was taken to use the specialist statistical evaluation tool to get a result.

Manners was then brought from prison and arrested and interviewed about the offence. He denied being responsible and provided a further DNA sample for evaluation.

In October 2016 forensic scientists came back with the news the team were hoping for - that it was in excess of a billion times more likely that the DNA did belong to Manners.

He was then charged with the offence in March 2017.

A timeline of his conviction

1979 - Manners commits two rapes but neither case is solved

1991 - Manners commits another rape but detectives are unable to solve the case

2006 - The 1979 cases are reviewed by the Operation Recall team and similarities with the 1991 rape are found. Further forensic work is carried out and in

2012 - Manners is arrested and charged for the 1979 rapes but the evidence for the 1991 offence is deemed not to be strong enough to meet the prosecution criteria.

2016 - With further scientific breakthroughs the evidence in the 1991 offence is reviewed again. This time, the evidence is strong enough. Manners ends up admitting the offence

25 May 2017 - Manners, already serving 10 years for the 1979 offences, is sentenced to an additional 12 years inside.

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