A GRIPPING Netflix documentary spills the secrets behind Jimmy Savile, a BBC presenter who sexually abused hundreds of children.

The new two-part Netflix programme, Jimmy Savile: A British Horror Story, delves into archive footage covering a 50-year period to consider how one of the biggest stars in television got away with his crimes as a prolific sex offender.

Jimmy Savile was a familiar face in the world of television and even DJ-ed on “the nation’s favourite” radio station, BBC Radio 1.

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He presented Top of the Pops and presented his own show, Jim’ll Fix It where children’s dreams came true every Saturday.

Despite his media career, As well as detailing his past crimes, the docuseries hones in on Jimmy Savile's time in Broadmoor Hospital,  a high-security psychiatric hospital in Crowthorne.

The Netflix documentary claims Savile was given his own suite of apartments and set of keys at the high security prison.

Bracknell News: Jimmy Savile. Credit: PA Jimmy Savile. Credit: PA

In 2014, The Board of West London Mental Health NHS Trust and the Department of Health commissioned an independent investigation into the role Jimmy Savile played at Broadmoor Hospital following allegations that he sexually abused patients there.

This report is readily available online for public viewing.

The report mentions how "Savile was able to gain access to ward areas, day rooms and patient rooms using his keys. The existence of alternative entrances to some wards and to the female area, and patchy implementation of security procedures by some staff, allowed him to reach some patient areas unsupervised and without the knowledge of those in charge.

"Savile’s general behaviour toward women was often flamboyantly inappropriate, including extravagant forms of greeting, inappropriate remarks and physical contact. Many women were uncomfortable with this and found him objectionable, but they thought at the time that it was part of his public act, ‘just Jimmy’."

The report also mentions how they had 10 allegations of sexual assault directly related to Broadmoor, and one allegation of indecent exposure to a minor.

Six of the allegations of assault involved patients at the time (one male and five female), two involved staff and two involved minors.

Savile died in 2011 aged 84, having never been brought to justice.

Police believe he is one of Britain’s most prolific peadophiles.