Life For Betty Yates' Murderer

Stephen Farrow has been found guilty of killing retired teacher Betty Yates in Bewdley, Worcestershire.

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Forensic scientist: Secondary transfer unlikely

When questioned by Farrow's barrister Peter Gower QC about the possibility of "secondary transfer" - meaning that Farrow may have touched a surface and Mrs Yates picked up the DNA from that surface - Mr McKenzie said it would be "very rare" to detect DNA from a secondary transfer.

The court heard a number of swabs were taken from Mrs Yates but the sample from the back of her left hand gave the strongest profile.

DNA a "billion times more likely" to come from accused than from someone else

In court today, forensic Scientist Christopher McKenzie told the jury:

"We found that it is a billion times more likely to have come from Betty Yates and Stephen Farrow than from Betty Yates and someone other than Stephen Farrow."

Mr McKenzie said he would expect the DNA to only stay on the hands for a relatively short period of time.

"Typically washing is the best way of removing it, or contact with other surfaces," he said.

"You would expect the hands to be regularly washed and in contact with other items."

Mr McKenzie said given the strength of the DNA profile he would expect there to have been either direct physical contact between Mrs Yates and Farrow or for it to have come from a bodily fluid - potentially saliva or sweat.

Stephen Farrow denies her murder.

The trial continues.

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Forensic scientist gives evidence in Betty Yates trial

Forensic Scientist Christopher McKenzie has been giving evidence in the Betty Yates murder trial.

The court heard that DNA representing a one-in-a-billion match to that of a retired teacher from Worcestershire and the man accused of her murder was found on the back of her hand.

A "full DNA profile" of Stephen Farrow, 48, was found on a swab taken from Betty Yates's left hand after the discovery of her body.

Farrow, of no fixed address, claims he saw Mrs Yates on December 30th but Bristol Crown Court heard the location the DNA sample was found would make it "extremely rare" to get such a strong profile days later.

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Murder accused said he'd killed before, court hears

The man accused of murdering retired teacher Betty Yates in Worcestershire had previously declared he'd killed before, a court has heard.

The jury was told that Stephen Farrow had pleaded guilty to aggravated burglary at an address in Stourbridge in the West Midlands in 1994.

Accused: Stephen Farrow Credit: ITV Central

The victim, who was 77 at the time but has since died, opened her front door to a man who produced a knife with a "12-inch blade".

In her statement (parts of which are disputed by the defence counsel), Ms Crow said:

"He asked for money and jewellery. Then he said that if anyone came in, he would kill me and the dogs. He said, 'I have killed before'.

"He was holding the knife above my head in a stabbing stance."

Mr Farrow is also accused of killing Reverend John Suddards who was found murdered in Gloucestershire six weeks after the body of Betty Yates was found.

He admits the manslaughter of the Rev Suddards on the grounds of diminished responsibility but denies murder. He also denies killing Betty Yates.

Scientific experts are expected to give evidence next week.

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