Britain's most dangerous female prisoner Joanna Dennehy threatened to kill Rose West within minutes of arriving in the same jail forcing her into solitary confinement and then another prison, it was revealed today.

Triple murderer Dennehy, 35, and West, 64, who murdered at least ten with husband Fred, are the only two women in British jails serving whole life sentences since the death of Myra Hindley in 2002.

Dennehy killed three men and tried to murder at least two more claiming it was 'moreish' and 'fun'.

Today criminologist Christopher Berry-Dee, who has met both killers, revealed that Dennehy was 'pure evil' and she even smelt of it.

And said staff at HMP Bronzefield in Surrey were so worried she would murder West that the 64-year-old was put into solitary confinement within minutes and then moved to another prison the next morning.

Britain's most dangerous female prisoner Joanna Dennehy threatened to kill Rose West within minutes of arriving in the same jail

He said: 'Joanna Dennehy tried from the get-go to assert herself as top dog. Between five and 20 minutes after first arriving at Bronzefield in 2014, she said she was going to kill Rose West.

Dennehy was so evil she even stank of it, a criminologist who has met her said today

'Dennehy quickly established herself as the shot-caller. She has guards and inmates at her beck and call.'

Former marine Berry-Dee has written a new book called Talking with Female Serial Killers after meeting them all over the world.

He told the Mirror: 'Dennehy was, without doubt, the most evil person I have ever met', and is 'streets ahead' of Aileen Wuornos, who murdered seven men in Florida between 1989 and 1990 by shooting them at point-blank range.

'Well-spoken' serial killer Dennehy has put on a lot of weight in jail, he said.

She appeared to threaten him by getting her face as close to his as possible and staring at him without blinking.

He added: 'I could smell evil coming off her - it’s a smell like no other so it’s impossible to describe but it’s acrid and dirty'.

Dennehy killed three men and tried to murder more claiming it was 'moreish'

She has showed 'no remorse' for murdering three men in the space of ten days.

TRAGIC VICTIMS OF FRED AND ROSE WEST Although Fred West was convicted of killing 12 women and Rose 10, the pair are thought to have killed up to 20 more. One victim who was almost certainly killed by West was his former girlfriend Anne McFall who like the others, was found in a shallow grave with body parts missing. West denied it. The warped pair used whips to torture their victims as well as their own children. Fred West committed suicide by hanging himself in a prison cell in January 1995 — before he could stand trial for the murders. Rose West is still a prisoner at HMP Low Newton in Durham, having been handed a rare 'whole life tariff' for her part in the killings. Confirmed victims include: Charmaine West, eight: Fred West's stepdaughter from his first marriage, Charmaine was murdered by Rose in 1971 while Fred was in prison. Rena Costello, 27: Charmaine's mother Rena, Fred's first wife, was murdered when she arrived to pick up her daughter Charmaine in August 1971. With Charmaine already dead, it is thought Fred killed her to avoid an investigation. Lynda Gough, 20: Miss Gough was a lodger in the West's home and was killed in April 1973. Rose told her mother she had moved to Weston-super-Mare. Carol Ann Cooper, 15: The teenager disappeared while walking home from the cinema to her Worcester children's home in November 1973. Her remains were found buried in the Wests' garden. Lucy Partington, 21: After spending Christmas with her family in Cheltenham, Miss Partington disappeared after leaving to catch a bus. The student was the cousin of novelist Martin Amis and the sister of author Marian Partington. Therese Siegenthaler, 22: The South London student was killed in April 1974 after disappearing while attempting to hitch-hike to Ireland. Shirley Hubbard, 15: One of the Wests' youngest victims, she disappeared on her way home from college in Droitwich. When her body was discovered, her head was completely covered in tape with a rubber tube placed in her mouth to allow her to breathe. Juanita Mott, 18: Miss Mott, a former lodger at 25 Cromwell Street, was living in Newent when she vanished. Shirley Robinson, 19: Another lodger, Miss Robinson was killed in 1978 after becoming pregnant with West's child. Alison Chambers, 17: The teenager disappeared in August 1979 and her remains were later found beneath the patio at 25, Cromwell Street. Heather West, 17: Repeatedly raped by her father, Heather complained to friends about the abuse and was murdered by her parents in a bid to keep her quiet. Advertisement

Psychopath Dennehy laughed and smirked as Judge Justice Spencer branded her a 'cruel, calculated, selfish and manipulative serial killer'.

During his summing-up, Dennehy muttered in the dock and shouted the word 'b******s'.

But after the judge ordered her to serve the rest of her life in jail, the mother of two, who was flanked by ten security guards, looked stunned and started wailing.

Dennehy is only the third woman to be given a whole-life prison term - along with Moors murderer Myra Hindley and House of Horrors serial killer Rose West - and the first to be given the term by a judge.

Hindley and West were both handed the sentence by home secretaries.

In March 2013, she stabbed to death three men in ten days in Peterborough before travelling to Hereford, where she knifed two more within minutes of each other.

Her first victim was a Polish man, Lukasz Slaboszewski, 31, who had come to believe Dennehy was his girlfriend.

She lured him to a property with suggestive texts, then stabbed him through the heart.

Dennehy then used a pocket knife to kill her housemate John Chapman, 56, stabbing him once in the neck.

The third victim was her landlord, Kevin Lee, 48, who she lured with the promise of sexual favours.

Excited by the police manhunt for her, she then stabbed Robin Bereza from behind in Hereford on April 2.

Nine minutes later, she knifed John Rogers. Both men survived.

She was caught after two days on the run.

Dennehy, who was brought up in a stable family home in the Home Counties, carried out the attacks to gratify her 'sadistic love for blood'.

The Old Bailey was told the killer had a 'sexual and sadistic motivation'.

Later she told a psychiatrist: 'I killed to see how I would feel, to see if I was as cold as I thought I was. Then it got more -ish.'

Experts said Dennehy craved notoriety and wanted to humiliate her victims through sick sex games. Before the killings she had boasted she had already killed four times.

When the three bodies were found, police launched a high-profile murder investigation.

Meanwhile Dennehy, 31, travelled to Hereford and started scouring the streets with accomplice Gary Stretch for more men to kill.

She told him: 'I want to have my fun.'

The pair randomly selected two dog walkers, retired fireman Robin Bereza, 64, and John Rogers, 56. Dennehy stabbed them in frenzied knife attacks. Both survived the horrific attacks only because of swift medical intervention.

During her search for further victims, Dennehy posed for photos with a huge serrated knife and bragged that she and Stretch were 'like Bonnie and Clyde', whose gang killed nine policemen in 1930s America.

She has tattoos on her arms, including one which said 'licking legend'.

Staff at HMP Bronzefield in Surrey were so worried Dennehy would murder West that the 64-year-old was put into solitary confinement within minutes and then moved to another prison the next morning.