A businessman was branded with an iron and had burning cigarettes pushed up his nostrils - everytime he refused his violent partner sex.

Ian McNicholl, 54, was also bludgeoned with a bar, repeatedly struck in the face with a mobile phone and endured a hammer attack.

On another occasion boiling water was poured over his groin by seven stone bully Michelle Williamson, now 45, and was jailed for seven years for the string of attacks.

Ian McNicholl was branded with an iron and had burning cigarettes pushed up his nostrils - everytime he refused his violent partner sex

Mr McNicholl, pictured, sustained facial injuries, pictured, after being beaten about the head with a mobile phone

He also suffered burns and bruises over his body, including these injuries to his hands, in the attacks by Michelle Williamson

Ian, who lived with his attacker in Grimsby, Lincolnshire, suffered a fractured skull, cracked ribs, broken cheekbones and a smashed nose during the 18 months of abuse.

Mr McNicholl says the sustained attacks were often triggered by refusing to have sex with Williamson.

Ian, who is now an ambassador for anti-household violence charity Mankind Initiative, will tell his story to police, lawyers and health workers at a Surviving Domestic Abuse seminar next month.

Recalling the attacks, Alan said: “There was never any remorse. She’d do it, then send me out for cigarettes - she definitely got off on it.”

The abuse began four months after the pair met by chance at Birmingham’s New Street Station when Ian was working in the Black Country as a training advisor.

Michelle thrashed Ian across the face with a vacuum cleaner lead after he refused to reveal sexual details of a previous relationship.

Williamson, now 45, pictured, was jailed for seven years in 2009 for the string of attacks

Then the violence rapidly cranked up and Ian said he would be attacked if he refused sex.

He said: “She’d rant ‘You don’t love me enough, you have five minutes to be ready for sex’.

“That, of course, is the last thing on your mind. Then she’d say ‘You now have four minutes, three minutes...’

“At the end of five minutes she’d blocked out what she had done.”

In separate incidents, he had a magnum of Champagne smashed across his knees, cigarettes stubbed out on his chest and shoved into his nostrils.

Twice he was scalded with boiling water and was also branded between the shoulder blades with an iron.

Ian’s ordeal only ended after a neighbour raised the alarm following a catalogue of violence that saw Ian struck with a phone, a metal bar from a rowing machine and a hammer.

Williamson, now living in Wolverhampton, was handed a seven-year prison sentence for causing grievous bodily harm at Grimsby Crown Court in 2009 - and is now free.

Asked to describe his former flame in the beginning when they met in September 2006, Ian said: “She was friendly, she had a good sense of humour.

“Perpetrators will strike when they know they have control - there is a grooming process.

“Manipulation leads to isolation, isolation gives the perpetrators control. My tactic was to not do anything that would make her angry.”

Michelle had warned her partner to blame the visable bruises she caused on burly blokes who were chasing his unpaid gambling debt.

When Ian thought about leaving his violent partner, Michelle told him that she was well connected and would have him killed.