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Ex-lag James Grant, 66, was in Broadmoor Hospital during the 80s, where he spent time with the serial killer.

Thirty years on, he has now revealed Sutcliffe's habits behind bars in great detail, including his obsession with believing he was the son of God.

Describing the first time he entered his cell, James told Daily Star Online: “I walked into his cell on laundry duty.

“I stared into his eyes. They were black eyes as if they no pupils.

“I turned and saw this big painting of Christ on the cross.

“But as I looked closer, I could see it wasn’t Jesus – it was him – with his jet black hair and beard."

"I thought to myself, 'what a w*****r'."

James spent six years in Broadmoor and has since remarried – saying he's a reformed character.

He felt sickened by his experience of coming face to face with the murderous madman.

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“It sent a shiver down my spine. It haunted me and I felt really bad," he added.

“This is the kind of man he is – how could somebody do something like that?

“Nobody had any time for him, I kept my distance although we did cross paths quite a lot.

"Ronnie Kray, myself and a lot of other people never really spoke to him.

"He brought that on himself because of the way he had acted in the past."

Twisted Sutcliffe – who bloodily butchered 13 women in Yorkshire and Greater Manchester during the 70s and 80s – has been at Her Majesty’s pleasure since 1981.

When he was arrested by South Yorkshire Police, Sutcliffe claimed God had told him to kill prostitutes while working as a gravedigger.

The evil Ripper told cops he was "a tool of God."

He used hammers, hacksaws and knives to brutally slaughter innocent women.

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During his 40 years behind bars, the infamous killer has become a Jehovah’s Witness and developed an obsession with collecting newspaper clippings about himself.

The vile murderer still gets fan mail from a legion of sick followers – recently receiving a magnifying glass to help him read it as his eyesight deteriorates due to diabetes.

Daily Star Online recently revealed how Brits are now buying "Murderabilia" in tribute to their favourite criminals.

(Image: GETTY)

A number of people have even got tattoos of the murderer – who was sentenced to life imprisonment at the Old Bailey in 1981.

He attempted in 2010 to gain release which prompted outrage from MPs and the public.

A decision at the Court of Appeal determined that he would never be released.