A THUG who terrorised his lover then threatened to slit her throat if her mum didn’t hand over £100,000 has been jailed for six and a half years.

Graham Martin flew into a rage after discovering his partner had texted an ex-boyfriend.

The victim suffered at the 29-year-old’s violent hands during a frightening 15-hour ordeal last June 1.

The 31-year-old was attacked and tied up as he branded her a “dirty s***”.

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Martin, who had been jailed for domestic abuse previously, text her mum stating: “I want £100,000 or I'm slitting her throat.”

The woman alerted police who listened in as Martin continued his threats while his partner cowered in fear.

He even sent a photo of his battered lover stating: “Is that enough for you?”

Armed officers eventually rescued a blood-soaked victim after Martin took her away in a taxi in Bellshill.

He was jailed at the High Court in Glasgow having earlier pled guilty to assault and attempted extortion.

Lady Stacey told him: “This is a despicable act. I know what you did and the effect it had on the woman who was your partner.

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“She was entitled to have trust in you and you breached that trust.”

Martin was also hit with a three-year non-harassment order banning him from contact the woman.

The couple had been dating for two years at the time of the incident.

They were at a friend's house when he lost the plot around 1am.

Prosecutor Mark Mohammed said: “Martin dragged her into a bedroom and barricaded the door with a chest of drawers and a bedside cabinet.

“He repeatedly punched her while calling her a 'w****'.”

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The court heard she had a total of 18 injuries to her head and body.

He will also be supervised for three years on his release.