The video, released by the Metropolitan Police, shows the off-duty police officer, 48, talking to Sarah on Poynders Road, near Clapham Common on March 3rd.

He then coaxed her into his hire car and handcuffed her as she got inside.

Dashcam footage shows the pair's interaction at 9.34pm, just moments before Couzens manipulated her into getting into his vehicle.

The firearms officer's car was later pictured in Dover at 11.29pm the same night.

From there, he drove her to Kent, where he raped and murdered Sarah.

The footage was first shown at the Old Bailey during Couzens' first day of sentencing on Wednesday, before subsequently being released by the police.

Couzens pleaded guilty to Sarah's rape and murder, and prosecutors also disturbingly told how he burnt her body afterwards.

Speaking in court, Sarah’s mother, Susan, told the court she was “tormented” and "haunted" by what her daughter had been through.

She said: "I go through the terrible sequence of events. I wonder when she realised she was in mortal danger; I wonder what her murderer said to her. When he strangled her, for how long was she conscious, knowing she would die?

"It is torture to think of it. Sarah was handcuffed, unable to defend herself and there was no one to rescue her. She spent her last hours on this earth with the very worst of humanity.

"She lost her life because Wayne Couzens wanted to satisfy his perverted desires. It is a ridiculous reason, it is nonsensical; how could he value a human life so cheaply?

"I cannot comprehend it. I am incandescent with rage at the thought of it. He treated my daughter as if she was nothing and disposed of her as if she was rubbish."

Lord Justice Fulford is set to determine the minimum length of Couzens’ life sentence today (Thursday) at the Old Bailey in central London.