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Input: Story highlights BBC chief calls  Jimmy Savile  case "a very  very grave matter"
LIke American Dick Clark   Savile  hosted teen music show for years
Before  he  died last year   Jimmy Savile  was viewed as a kind of UK equivalent to American TV icon Dick Clark  gaining fame by bringing music to generations of teens.  Savile  was knighted by Queen Elizabeth II.
 He  now stands accused as a predatory sex offender.
The shocking allegations have Britain reeling. Countless viewers who grew up watching  Savile  on TV's "Top of the Pops" and  his  children's program "Jim'll Fix It" are now questioning their trust in a social institution: the British Broadcasting Corporation.
 Savile  died in October 2011 at age 84  soon after being treated in a hospital for pneumonia.
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"There is no question that what  Jimmy Savile  did and the way the BBC behaved in the years -- the culture and practices of the BBC seems to allow  Jimmy Savile  to do what  he  did -- will raise questions of trust for us and reputation for us " Entwistle said.
"This is a gravely serious matter  and one cannot look back at it with anything other than horror  frankly  that  his  activities went on as long as they did undetected."
Entwistle pointed out that the BBC was not alone in failing to uncover  Savile 's behavior  with no newspaper exposÃ© published in  his  lifetime.
Photos: Photos: The life of Jimmy Savile Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â British radio disc jockey  television star and charity fund-raiser  Sir Jimmy Savile  poses for a photo at Buckingham Palace  London  after receiving the Order of the British Empire in 1972. Since  his  death a year ago at age 84   Savile  has been knocked off  his  perch as a national treasure  accused of being a predatory pedophile who used  his  fame and position to abuse youngsters  sometimes on BBC premises. Hide Caption 1 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â Dancers on the BBC TV show "Top of the Pops" adjust  Savile 's track suit top for  him  during the making of the show in 1973. Hide Caption 2 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â Savile poses with British Prime Minister Margaret Thatcher at a National Society for the Prevention of Cruelty to Children fund-raising presentation in 1980. Hide Caption 3 of 15 Photos: Photos: The life of  Jimmy Savile   The life of Jimmy Savile â Savile  pours a cup of tea. Hide Caption 4 of 15 Photos: Photos: The life of  Jimmy Savile   The life of Jimmy Savile â Savile  calls from the Wren House International Telephone Exchange in London in 1975 as part of a "Fun And Happiness Weekend " organized by the National Association of Youth Clubs. Hide Caption 5 of 15 Photos: Photos: The life of  Jimmy  Savile  The life of Jimmy Savile â Savile  arrives in London in 1972 on  his  way to Buckingham Palace  where  he  is to be awarded the Order of the British Empire. Hide Caption 6 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â The first presenter of long-running music program "Top of the Pops "  Savile  poses by a portrait of  himself  in February 1965  while enjoying  his  regular breakfast of Coke and a cigar in a central London hotel room. Hide Caption 7 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile â Savile  and  his  mother pose outside Buckingham Palace in London  where  he  receive  his  Order of the British Empire in 1972. Hide Caption 8 of 15 Photos: Photos: The life of  Jimmy Savile   The life of Jimmy Savile â Savile  shows off  his  Order of the British Empire to members of the "Second Generation" song and dance troupe. Hide Caption 9 of 15 Photos: Photos: The life of  Jimmy Savile   The life of Jimmy Savile â Savile  stands on the sidewalk with  his  motor home. Hide Caption 10 of 15 Photos: Photos: The life of  Jimmy Savile   The life of Jimmy Savile â Savile  holds a newly-printed "Lucky Jim" poster. The posters feature a portrait of the DJ  along with a text reading: "The Lucky Jim poster can bring you health  wealth  happiness. This is a genuine duplicate signature and what's more  Jimmy  has actually touched YOUR poster!" Hide Caption 11 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â British Secretary of State for Social Services Norman Fowler presents  Savile  with a check for half a million pounds in 1982 as the government's contribution to an appeal for a new spinal injuries unit at Stoke Mandeville Hospital. Hide Caption 12 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â Savile waves with Jersey Holiday Queen Gaynor Lacey at the Jersey Battle of Flowers carnival in 1972. Hide Caption 13 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â Days before  his  80th birthday in 2006   Savile  prepares for the Great North Run in Newcastle  northern England. Hide Caption 14 of 15 Photos: Photos: The life of  Jimmy Savile  The life of  Jimmy Savile  â The funeral cortege of  Savile  arrives at Leeds Cathedral for a funeral service on November 9  2011  in Leeds  England. Hide Caption 15 of 15
" Mr. Savile  has prosecuted  his  activities   his  disgusting activities  in a matter that was very successfully and skilfully concealed  and experts in pedophile behavior have pointed out that's often the case " Entwistle said.
 Savile  had access to psychiatric hospital
The National Health Service also faces difficult questions over the access  Savile  was allowed to a number of hospitals. Among  them  was Broadmoor  a high-security psychiatric hospital where  Savile  worked as a volunteer and had keys to the wards. In 1988   he  was appointed to a senior role there  a move now being investigated by the NHS.
The police may also be asked to explain why past abuse claims against  Savile  never led to investigations resulting in a prosecution in  his  lifetime.

TV icon sex