A self-styled "Snapchat queen" who posted a video of her boyfriend dying in a pool of blood has been jailed for 14 years.

Fatima Khan, 21, who set up the fatal knife attack on her on-off boyfriend Khalid Safi and filmed a video on her phone as the 18-year-old lay dying on the pavement, was sentenced at the Old Bailey on Friday.

She then posted the footage on Snapchat with the caption “this is what happens when you f*** with me” and sent it to her friends.

Khan was convicted of manslaughter for orchestrating the attack on Mr Safi outside a Costa Coffee shop in Acton on December 1, 2016.

The man accused of carrying out the stabbing, Raza Khan, is still at large.

Self-confessed Snapchat addict Khan denied murder and the alternative of manslaughter saying she was ashamed of the video.

A jury at the Old Bailey found her guilty of manslaughter by a majority of 10-1 after a trial in July.

During her trial, her defence barrister Kerim Fuad QC described Khan to jurors as “Ilford’s Snapchat Queen” and said she saw more of life on her phone than through her eyes.

Judge Michael Topolski QC described her as "cold and callous" for filming her boyfriend's death and posting it on social media.

The judge said: "After the attack, your disrespect for Khalid reached new and inhuman depths when in an act of grotesque contempt for him you calmly walked towards him as he lay dying and while surrounded by the decent caring people who had stopped to help him, you filmed him in the process of dying and take a still picture of him all of which which you sent with that chilling message to all your Snapchat friends.

"It's hard to understand how anyone could act in such a cold and callous and despicable way."

The court heard that on the evening of December 1, Khan had an argument with Mr Safi, who she had been dating for two years, when he turned up at her workplace unexpectedly.

She filmed parts of the argument and posted them to Snapchat, claiming that he had assaulted her and threatened her with a gun, the court heard.

Khan alerted Raza Khan, who sought to be her boyfriend, via another Snapchat post that Mr Safi would not leave her alone. He allegedly armed himself with a knife and took a taxi to North Acton where he found Mr Safi, his love rival, became involved in a row with him and then stabbed him to death, according to police. The two men had an argument over Khan two years earlier, jurors were told.

Raza Khan stabbed Mr Safi with a 13-inch knife, the court was told. Mr Safi had tried to fight back with a screwdriver.

His girlfriend then took pictures of him dying in a pool of blood on the pavement and posted them on Snapchat with the chilling message before calmly walking away from the scene.

And in the run-up to the killing, she had been in daily contact with Raza Khan via Snapchat, jurors heard.

She became upset when "needy" Mr Safi bought her a watch and presented it to her at her home five days before his death, jurors heard.

She threw the gift at him out of an upstairs window because her family did not know about the relationship.

Raza Khan was injured in the fight but calmly left the scene and his whereabouts remains unknown, the court heard.

Officers are still hunting for Raza Khan and there is a £5,000 reward from Crimestoppers for information that could lead to his arrest.

Earlier this week, Mr Safi’s brother Shamsullah, 25, from Southall, told the Standard he wanted lengthy jail sentences for both culrpits. “We want them in prison for as long as they can get. They should get life,” he said. “I will be in court and I will tell my mum and dad, and my brothers and sisters in Kabul the sentence they get. My mum and dad want justice for their son.

“I will not forgive them, they took my brother’s life. How could I forgive them?”

Anyone with information concerning the whereabouts of Raza Khan is asked to call the police incident room on 020 8721 4054 or to call Crimestoppers anonymously on 0800 555 111 or visit www.crimestoppers-uk.org.