A COUPLE groomed a 14-year-old girl from Bolton in internet chat rooms before abusing her for 24 hours in a hotel room as their “sex slave”.

Married engineer Christopher Zeb, aged 26, and his 22-year-old mistress, Poppy Knight, blindfolded, bit and bruised their teenage victim while they filmed the schoolgirl performing various sex acts.

A judge condemned the "serious sexual offences" as he jailed Zeb for six-and-a-half years and Knight for 30 months.

Oxford Crown Court heard the couple had started an affair in 2011, which “quickly developed into a sadistic sexual relationship”.

Zeb also used pornography wesbites and chat rooms to search for younger "slaves".

On Easter Sunday last year, Zeb and Knight travelled to Manchester to meet the 14-year-old, who cannot be named for legal reasons.

Prosecutor Cathy Olliver said: "She lied to her mother about going to a friend's house in Bolton. Instead she got the train to Manchester.

"Mr Zeb and Miss Knight picked her up at the station and drove her to a hotel."

After going out for a meal together, the three went upstairs to the bedroom where the girl was blindfolded and twice forced to perform a sex act on Zeb.

They then made a "den" out of bedclothes in the room and Knight filmed the orgy.

"Poppy Knight had brought the morning after pill for her, so she didn't use condoms," the prosecutor said.

"Her parents had no idea where she was.”

The girl, who had returned home with bite marks and bruises, did not complain to the police.

Police caught the couple when the father of a 12-year-old girl from Humberside contacted officers after he discovered Zeb was grooming her online.

The father found she had sent Zeb pictures of herself and he had asked to meet up with her in July last year, but she had declined.

Police raided Zeb's home in Brunswick Place, Banbury, last September and seized his computer and a mobile phone.

Detectives discovered the hotel room video on his computer, along with a word document entitled "Slaves in Training", which detailed girls he was targeting on the internet.

They also found sexual pictures Zeb had encouraged both the 12 and 14-year-old girls to e-mail to him after he'd set them tasks to "please daddy".

When police seized the girls' phones, they found Zeb's phone number stored in them saved under the name "Master".

Investigating officers also found Poppy Knight had been in contact with the 14-year-old girl they met in Manchester.

In an e-mail exchange read out in court, she told the schoolgirl they were "slave sisters" and they had to please Zeb.

Zeb admitted nine offences, including abducting a child, meeting a female aged under 16 after sexual grooming and five child sex offences. One count referred to sexual activity with a child aged under 13.

Knight, of Chepstow Gardens, Banbury, admitted eight similar offences related only to the 14-year-old girl.

Both defendants, who had no previous convictions, sat apart in the dock separated by a prison officer and did not make eye contact as Judge Ian Pringle considered their punishment.

Knight wept as the case was presented in court. Zeb stared forwards blankly showing no expression.

Shocked relatives of the pair, including Zeb's parents, sat in silence in the public gallery.

In mitigation, Knight's counsel David Bright claimed she was also one of Zeb's victims.

He said: "What else would motivate an ordinary, quiet young woman to behave in the way Poppy Knight behaved?”

Zeb's defence counsel Trudi Yeatman told the judge: "He's not in denial. He fully accepts the extent of his offending."

Judge Pringle told the pair: "I sentence you both for extremely serious sexual offences committed in the main against a 14-year-old girl in April last year.

"You Christopher Zeb were the main perpetrator of that abuse and abuse it was.

"You subjected that girl to all forms of intercourse and I would be failing grossly in my duty if I was not to impose on both of you a sentence of immediate imprisonment."

After jailing the pair, the judge ordered they sign the sex offender's register and would be banned from contact with children.

He also banned them from using the internet on a computer not fitted with police monitoring software.