THIS is the chilling moment Britain's youngest serial killer showed cops how he stabbed a man 102 times and gouged out his eyes as he "revelled" in the murder.

Warped James Fairweather was just 15 when he slaughtered James Attfield and Essex uni student Nahid Almanea - with experts saying he "would've killed more".

5 James Fairweather described in chilling detail how he butchered a dad Credit: PA:Press Association

5 The teen shows police his stabbing motion

Harrowing footage shows the serial killer-obsessed teen explaining to cops how he brutally murdered dad-of-five James in Colchester, Essex, in March 2014.

He says: "My voices were talking to me, ‘you need to make a sacrifice or we’re going to come and get you, you need to do it’.

“And I saw him, he was lay on the grass like that (closes his eyes and puts his head back in chair), just fast asleep, swear he was drunk.

“And he goes, he goes ‘you’re the one, he’s the one, he’s the one, do it, do it’."

Fairweather then stands up and continues: "Went up to him, stood over like that and I stabbed him first here (points to abdomen) and I done it a few times.

“While I was doing that my voices were laughing and laughing and laughing and louder and louder.”

The haunting footage has been explored in Britain’s Deadliest Kids on Quest Red by experts who believe the schoolboy is "revelling" in butchering the dad.

Forensic Psychologist Dr Keri Nixon tells the show: "He’s describing what he did with no emotion. There’s nothing there.

"There’s almost a complete detachment from what he’s saying...what that says to me is that he’s dangerous.

"If he wasn’t arrested, he would have absolutely gone on to kill again.”

'SERIAL KILLER OBSESSED'

Three months after he killed James, the sick loner slashed Saudi student Nahid Almanea 16 times – plunging a bayonet blade into the 31-year-old’s eye in “sacrifice” as she walked to lectures.

He was finally caught 11 months later after a massive £2.6million police investigation after a jogger saw him at the same spot he killed Nahid hunting for a third victim.

Armed with a knife and gloves, he told them: "I’m waiting for someone to kill.”

The Nazi-obsessed teen added: "I’m looking for another victim to sacrifice. I’ve done it twice before."

During his trial, the court was told Fairweather was a video game fanatic who had a grisly search history on his phone.

His sick serial killer fantasy saw him looking up The Yorkshire Ripper and the Stockwell Strangler on his phone - as well as searching an online encyclopaedia of murderers.

'DESPICABLE'

DVDs seized at his home included ‘Bind Torture Kill’, ‘Serial Killers, a Peter Sutcliffe documentary and one about the killer Ted Bundy.

His favourite serial killer was Ted Bundy and he was interested in cannibalism and fantasised about working in a concentration camp.

The documentary also reveals he kept newspaper clippings of his killings as a "trophy" and told school pals he wanted to be a "murderer" when he grew up.

Fairweather claimed he heard voices who "laughed" and told him to hack at both his innocent victims - but he was proven to be a liar in court.

He was caged for life with a minimum of 27 years in April 2016 after being found guilty of two counts of murder.

After he was jailed, it was revealed Fairweather had a conviction for holding up a corner shop with a knife in January 2014 but escaped a prison sentence.

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James' sister Jo Spraggan believes her brother would still be alive had Fairweather been given a harsher sentence.

She told the show: "I was quite angry when I heard that he had already caused upset by holding up a shop at knifepoint. And to find out that he only got a slap on the wrist and was then allowed to walk free, and just a few months later to then go on and kill.

"It’s despicable, really. I think Jim’s death could have been prevented. Because if James Fairweather had been given a harsher sentence for carrying a weapon in the first place, then he may not have been out there to commit the crimes that he committed."

Britain’s Deadliest Kids airs Saturdays at 10pm on Quest Red and on the QuestOD app

5 Fairweather 'would've gone to kill more' Credit: PA:Press Association

5 The teen was obsessed with serial killers Credit: PA:Press Association