Everard, who had been visiting a friend in Clapham, south London, was strangled then set on fire, with her remains found in woodland a week after she was snatched.

At a two-day sentencing hearing, prosecutor Tom Little said Couzens targeted the 33-year-old marketing executive on March 3 after finishing a shift at the US embassy.

Couzens, who was off-duty but wearing his police belt, kidnapped Everard in a “false arrest”, by “handcuffing her and showing his warrant card”, he added.

Security camera footage showed him holding up his warrant card and then handcuffing Everard before putting her into a car he had hired “to kidnap and rape a lone woman”, Little said.

A couple driving past in a car also witnessed this, and assumed an undercover police officer was making an arrest, the lawyer added.

But he said Couzens exploited his knowledge and experience of police patrols enforcing lockdown restrictions and knew what language to use.

UK police officer Wayne Couzens pleads guilty to Sarah Everard’s murder

From the moment Everard was handcuffed at 9.34pm, it was just three minutes before Couzens drove off with her in the car, taking her to Dover, on the English south coast. There, he transferred her to his own car – again captured on camera, driving her to a remote rural area where he raped her.

Couzens, a married father-of-two, told a psychiatrist he used his police belt to strangle Everard before setting her body on fire and dumping it in bags.

Police checked security camera footage and identified Couzens through his hire car. He was arrested at his home on March 9, just minutes after he deleted his phone data.

A former boyfriend had given evidence that Everard was “savvy and streetwise” and would not have got into a car with a stranger except “by force or manipulation”, he added.

“The fact she had been to a friend’s house for dinner at the height of the early 2021 lockdown made her more vulnerable to and more likely to submit to an accusation that she had acted in breach of the Covid regulations in some way,” the lawyer told the court.

Little told judge Adrian Fulford the “unprecedented” case was so exceptional it could warrant a whole-life jail sentence. Sentencing is due to be passed on Thursday.

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Couzens sat in the dock at London’s Old Bailey with his head bowed, watched by Everard’s family, who gave emotional victim impact statements to the court.

Everard’s mother Susan said her daughter “lost her life because Couzens wanted to satisfy his perverted desires. It is a ridiculous reason”.

“I am outraged that he masqueraded as a policeman in order to get what he wanted,” she added.

The victim’s father, Jeremy, asked the killer, “Mr Couzens, please will you look at me”, before telling him: “No punishment that you receive will ever compare to the pain and torture that you have inflicted on us.”

Before the hearing, the Metropolitan Police said in a statement: “We are sickened, angered and devastated by this man’s crimes, which betray everything we stand for.”

The force has sacked the officer and said his actions “raise many questions and concerns” but it would not comment further until after the sentencing.

Demonstrators outside the court held banners with slogans criticising the police such as “Met Police Blood On Your Hands” and let off smoke flares.

The government has pledged to improve legislation after Everard’s murder sparked widespread anger at women’s lack of safety in public spaces.

In July, the interior ministry said it would increase the currently low numbers of perpetrators brought to justice for offences including rape, domestic abuse, stalking and sexual harassment and work with police to “more effectively respond to street harassment”.