Notorious killer cop Wayne Couzens has sparked a “sick to the stomach” friendship with so-called “Morgue Monster” David Fuller while behind bars.

The former Met officer, who lived in Deal before his arrest four years ago this month, was jailed for life after he raped and murdered Sarah Everard.

The 52-year-old used his power as a police officer to falsely arrest the 33-year-old before kidnapping her as she walked home in Clapham Common, south-west London, from a friend's house in Brixton during the lockdown of 2021.

He then took her to woodland near Ashford, where he murdered her and dumped her body.

Couzens, who was transferred to HMP Frankland in Durham in 2022, is now a number one target for violence, according to prison sources.

The category A jail is home to around 800 men, including some of Britain’s worst killers such as Soham murderer Ian Huntley, serial killer and rapist Levi Bellfield, soldier Lee Rigby’s murderer Michael Adebolajo, and Urfan Sharif, who killed his own 10-year-old daughter, Sara.

Terrorists are also locked up there, but of the lot, the most vulnerable are high-risk sex offenders like Couzens.

He was moved to the prison after being slashed with a jagged lid of a tuna tin by two inmates at a high-security jail in London.

Ricky Kileen, a reformed prisoner who served five years at Frankland for his involvement in a machete attack, told MailOnline Couzens will be living in fear of further attacks.

He says ex-police officers are “number one targets” with the violence they could experience likely to be “extreme”.

He added: “They will get slashed, they will get stabbed in the neck, they will try to take their eyes out, they will chuck boiling hot oil over them or use a boiling hot kettle full of sugar.”

But while constantly looking over his shoulder for assailants, Couzens has reportedly made friends with notorious necrophile David Fuller.

Dubbed the Morgue Monster, Fuller, who was born in Deal, defiled the bodies of more than 100 dead women and girls.

The former maintenance electrician with the Maidstone and Tunbridge Wells NHS Trust committed the crimes at the mortuaries of the now-closed Kent and Sussex Hospital and of the Tunbridge Wells Hospital, in Pembury.

He also murdered two young women, Caroline Pierce, and Wendy Knell, in separate attacks in 1987, when he was 32.

Couzens and Fuller are said to have struck up a relationship after being placed on the same wing and chatting about Deal, one source told The Mail.

He said: “We call them the odd couple.

“They know some of the same areas from back in the day.

“The idea of them swapping stories makes me sick to the stomach.”

Couzens’ whole life order was the first time the sentence had been imposed for a single murder of an adult not committed in the course of a terror attack.

During his sentencing, Lord Justice Fulford described the circumstances of the murder as "grotesque" and Sarah's final hours as “bleak and agonising as is possible to imagine.”

After strangling Sarah, Couzens then dumped her body in Great Chart, near Ashford – 80 miles from where he had picked her up.

Shortly after, Couzens took his wife and children to the same woods, where they played metres from where her body was hidden.

Such was the shocking nature of his crimes that it sparked nationwide protests.

Lord Justice Fulford said at his sentencing in September 2021: "You have eroded the confidence the public are entitled to have in the police forces of England and Wales.

"It is critical each subject can trust police officers when they encounter them and submit to their authority which they are entitled to believe is being exercised in good faith.”