Sally Anne Bowman was murdered yards from her home
A man accused of murdering teenage model Sally Anne Bowman confessed to having sex with her after she was killed, a court has been told.
Miss Bowman, 18, was repeatedly stabbed and bitten outside her home in Croydon, south London, in September 2005.
Chef Mark Dixie, 37, of no fixed address, denies murdering Miss Bowman.
Prosecutor Brian Altman said: "The defendant confesses that he had sex with Sally Anne and that he had sex with her after her death."
The court heard Mr Dixie had said he had been drinking, took drugs and had "taken advantage of the situation".
Mr Altman said: "That astonishingly is his defence. It is born out of desperation."
Miss Bowman had been driven home after a night out in Croydon Town Centre by her boyfriend Lewis Sproston at about 0400 BST, the court was told.
The couple began to argue as they sat in the car outside Miss Bowman's house with each accusing the other of seeing other people, Mr Altman added.
She had tried to stop Mr Sproston driving off by sitting on the bonnet of the car, but as he left he had seen Sally Anne walking into her drive.
Mr Altman said Mr Sproston believed someone had been watching them and at one stage had "looked angrily" into the car.
Neighbours heard screams at about 0420 BST but it was not until over two hours later that the "gruesome discovery" of the model's body was made.
The defendant's DNA was found on Miss Bowman's body, his bloody fingerprint on her shoe and his bite marks on her cheek, neck and breast, the jury was told.
Mr Altman said Mr Dixie, a father of three and a "recreational drug user", had a history of sexual violence.
The court was told that, at the age of 17, he indecently assaulted a female Jehovah's Witness in London, and a match to his DNA was found by police investigating the rape and stabbing of a student in Perth, Western Australia.
He had been celebrating his 35th birthday drinking and taking cocaine in a pub on the night Miss Bowman died, the court heard.
The party later retired to a flat in Avondale Road, two streets away from where Miss Bowman was killed.
The case continues.