Police answered a 999 call to a house to find a Nottinghamshire man him strangling his unconscious ex-partner.
Joe Liffen had his hands around the throat of the victim when officers walked in to her home after answering a call from her friend.
Liffen then jumped out of the bedroom window and ran from the scene in Mansfield Woodhouse in the early hours of November 15.
Nottingham Crown Court was told he launched the “sustained and brutal” attack after lying in wait for her in her home.
He had told her he was going to visit his ex-wife in Manchester, but instead went to her house while she was on a night out with friends in Mansfield.
When she returned he put his hand over her mouth and told her not to speak, before throwing her on to the bed and repeatedly punching her in the face and head.
The 16st Liffen then sat on top of the 8st victim and started to strangle her.
She had been given a lift home by a male friend, who came into the house to use her downstairs toilet.
Her friend heard the attack from downstairs and phoned the police, who arrived and entered the house while the attack was still ongoing, before Liffen escaped as they entered the room.
The victim regained consciousness but started having seizures. She was left with bruising to her face and head, neck and throat and had a one-inch cut on one leg.
Officers tracked down Liffen later that day and arrested him.
Nottingham Crown Court was told Liffen had a drink and drugs problem and was a “jealous” man, the court was told.
He was sentenced to 11 years for GBH, three years for conspiracy to pervert the course of justice, to run consecutively, and one year for breaching a restraining order, to run concurrently.
Liffen, 26, of Cardle Close, Forest Town, admitted causing grievous bodily harm, breaching a restraining order and conspiracy to pervert the course of justice at a previous hearing.
His aunt, Samantha Bailey, 48, of Chapel Fields, Ravenshead, was also sentenced to 15 months in prison after admitting conspiracy to pervert the course of justice.
The court was told that while Liffen was remanded in custody in connection with the offence he sent numerous texts to the victim, trying to encourage her not to turn up to court to give evidence against him.
He also colluded with Bailey in an attempt to make her miss the court appearance.
The court was told Bailey paid for a hotel and beauty treatments in Nottingham for the victim on the day of the court appearance before sending a text saying “I’m making someone disappear”.
Speaking after the case, Temporary Detective Inspector Nikki Smith, of Notts Police, who led the investigation, said: “This was a vicious, sustained attack on a vulnerable woman who had no chance of defending herself.
“She is lucky to be alive after the attack and, as the judge said, if it hadn’t been for the fast response of our officers this could have had an even more serious ending.
“Both Liffen and Bailey also put pressure on this vulnerable woman to miss her court date in an attempt to avoid justice being done.
“Domestic violence will not be tolerated in any form in Nottinghamshire and we would urge anyone who is a victim or a witness to domestic abuse to call us and we will do everything in our power to bring the perpetrators before the court.”
