Rapist filmed himself subjecting a woman to a horrific three-hour ordeal of sexual assaults.

A Derby rapist who filmed himself subjecting a woman to a horrific three-hour ordeal of sexual assaults has been jailed for 20 years and six months.

Matthew Hemmings, 41, used a variety of sex toys on the woman, who he handcuffed, trussed up, humiliated and degraded at his city centre flat.

The prosecutor at Derby Crown Court described the case as "the most extreme rape" he had ever dealt with in court, and even the defendant's own barrister described Hemmings' actions as "a catalogue of horrors."

Sentencing Hemmings, Judge Nirmal Shant QC said: "In every way possible you humiliated her and recorded what you were doing to her over a prolonged period of some three hours. You targeted her because she was vulnerable, approaching her as she lay in the doorway of a shop and enticing her back to your flat. You had laid out sex toys and outfits on your bed which you had bought from Amazon. She was vulnerable and a heavy Mamba user and once inside your flat you took photos of her and recorded her. You raped and sexually assaulted her while she was helpless. There was a pause and you re-emerged in a full face mask and with a machete. Mercifully you did not use it on her, but one cannot imagine how frightening an incident this was."

The court heard that the sex attacks took place at Hemmings' flat on November 24. He filmed the woman as she lay in the doorway of a city centre shop and then coaxed her to his address with the promise of warmth and shelter.

The prosecutor described some of the acts Hemmings forced the woman to perform, stating: "I would say this is the most extreme rape I have ever prosecuted, it was an ordeal that went on for three hours. After his arrest the defendant even told the police 'I worry about myself sometimes'. It was clearly degrading, it was prolonged, he filmed it and violence was threatened. It involved a number of sex toys which he had laid out on a bed and on his own account she was particularly vulnerable."

Hemmings was arrested and the videos he made of his sex attacks were discovered by the police. He initially told them the victim was "compliant throughout," but later pleaded guilty to rape and sexual assault.

Hemmings' sentence is made up of a minimum of 13-and-a-half years custody and an extended licence of a further seven years. He will be on the sex offender register for life.