A review into why Newsnight shelved a report into sexual abuse by Jimmy Savile will be released on Wednesday.

Top BBC executives and journalists on the flagship current affairs show have given evidence into why a planned programme on the DJ did not go ahead.

The BBC has repeatedly denied claims it axed the show because it clashed with planned tributes to Savile, after his death in 2011.

Figures including director of news Helen Boaden, Newsnight editor Peter Rippon and former director-general Mark Thompson are reported to have been questioned as part of the review which is carried out by ex-Sky News executive Nick Pollard.

Mr Rippon stepped aside from his role after the BBC said his explanation as to why the show dropped its investigation into the late DJ and TV presenter was "inaccurate or incomplete in some respects" and corrected his statement.

The publication of the review - accompanied by a separate report by Ken MacQuarrie into how Newsnight reported an incorrect story implicating Lord McAlpine in child abuse allegations - caps a bad end to a year that started so well for the BBC.

The corporation managed to shake off criticism for how it covered the Diamond Jubilee and was widely praised for its coverage of the Olympics and Paralympics, but has ended the year paying out £185,000 in damages to Lord McAlpine and losing not one, but two Director Generals.

George Entwistle, who was head of BBC television at the time the investigation was dropped, took the top job in September only to resign after just over 50 days in charge as the Savile scandal washed over the corporation.

Another review led by Dame Janet Smith, looking at the culture and practices of the BBC during the years in which Savile worked there, is expected next year.

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  • George Entwistle resignation

    BBC director general George Entwistle stands outside BBC Broadcasting House, London, after he announced his resignation over the "unacceptable" Newsnight broadcast which wrongly implicated a senior former Conservative in a child abuse scandal.

  • BBC crisis

    File photo dated 05/10/2010 of Culture Secretary Maria Miller, who today said the £450,000 severance pay for outgoing BBC director-general George Entwistle is "tough to justify considering the circumstances of Mr Entwistle's departure and his contractual arrangements".

  • BBC crisis

    Acting director general of the BBC Tim Davie arrives at New Broadcasting house in central London.

  • BBC crisis

    Acting director general of the BBC Tim Davie arrives at New Broadcasting house in central London.

  • BRITAIN-MEDIA-BBC-CHILD-SEX-POLITICS

    BBC employees arrive for work at the organisation's New Broadcasting House in central London, on November 12, 2012. The BBC's director of news, Helen Boaden, and her deputy, Stephen Mitchell, have stepped aside amid the crisis over late television star Jimmy Savile and a report wrongly accusing a politician of child abuse, the BBC said Monday. The announcement follows the resignation on Saturday of BBC director-general George Entwistle over another Newsnight report last week that wrongly implicated a senior political figure in abuse at a Welsh children's home in the 1970s. AFP PHOTO / WILL OLIVER (Photo credit should read WILL OLIVER/AFP/Getty Images)

  • BRITAIN-MEDIA-BBC-CHILD-SEX-POLITICS

    The BBC's offices at New Broadcasting House are pictured in central London, on November 12, 2012. The BBC's director of news, Helen Boaden, and her deputy, Stephen Mitchell, have stepped aside amid the crisis over late television star Jimmy Savile and a report wrongly accusing a politician of child abuse, the BBC said Monday. The announcement follows the resignation on Saturday of BBC director-general George Entwistle over another Newsnight report last week that wrongly implicated a senior political figure in abuse at a Welsh children's home in the 1970s. AFP PHOTO / WILL OLIVER (Photo credit should read WILL OLIVER/AFP/Getty Images)

  • BRITAIN-MEDIA-BBC-CHILD-SEX-POLITICS

    CROPPED VERSION The shadow of chairman of the BBC Trust Lord Chris Patten is reflected on a wall outside the BBC's offices in central London on November 11, 2012. Patten called for a radical overhaul of the world's largest broadcaster after it was plunged into crisis following the resignation of the director-general amid a sex abuse scandal. AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)

  • George Entwistle resignation

    BBC director general George Entwistle (left) looks on as Chairman of the BBC Trust Lord Patten speaks to the media outside BBC Broadcasting House, London, after Mr Entwistle announced his resignation over the "unacceptable" Newsnight broadcast which wrongly implicated a senior former Conservative in a child abuse scandal.

  • George Entwistle resignation

    BBC director general George Entwistle (left) looks on as Chairman of the BBC Trust Lord Patten speaks to the media outside BBC Broadcasting House, London, after Mr Entwistle announced his resignation over the "unacceptable" Newsnight broadcast which wrongly implicated a senior former Conservative in a child abuse scandal.

  • George Entwistle resignation

    BBC director general George Entwistle speaks to the media outside BBC Broadcasting House, London, as he announced his resignation over the "unacceptable" Newsnight broadcast which wrongly implicated a senior former Conservative in a child abuse scandal.

  • Savile sex abuse investigation

    File photo dated 23/10/2012 of BBC Television Centre, Wood Lane, London, as the BBC revealed it is investigating nine allegations of "sexual harassment, assault or inappropriate conduct" among current staff and contributors as the fallout from the Jimmy Savile scandal continues.

  • Savile sex abuse investigation

    File photo dated 03/02/1999 of Sir Jimmy Savile, as the BBC revealed it is investigating nine allegations of "sexual harassment, assault or inappropriate conduct" among current staff and contributors as the fallout from the Jimmy Savile scandal continues.

  • Savile sex abuse investigation

    File photo dated 25/01/12 of Chairman of the BBC Trust, Lord Patten, who has said he is dedicated to getting to the bottom of the Jimmy Savile scandal that has engulfed the corporation, vowing there would be "no covering our backs".

  • Savile sex abuse investigation

    File photo dated 01/01/72 of DJ Jimmy Savile visiting the patients and staff of Leeds General Infirmary at the start of the new year. tHE Chairman of the BBC Trust, Lord Patten, has said he is dedicated to getting to the bottom of the Jimmy Savile scandal that has engulfed the corporation, vowing there would be "no covering our backs".

  • Savile sex abuse investigation

    File photo dated 27/10/2005 of Dame Janet Smith. An inquiry into the BBC's "culture and practices" during the era of star presenter Jimmy Savile's campaign of sexual abuse is to begin today.

  • Winterbourne View court case

    Bev Dawkins (third right) of Mencap reads a statement on behalf of the families who suffered abuse by 11 members of staff from the Winterbourne View care home who were caught on camera abusing severely disabled patients during an undercover BBC Panorama investigation at the South Gloucestershire private hospital.

  • Gary Glitter Arrested By Officers From 'Operation Yewtree'

    LONDON, UNITED KINGDOM - OCTOBER 28: Police officers leave the apartment of Paul Gadd, otherwise known as 'Gary Glitter' on October 28, 2012 in London, England. Police have arrested the former pop star and convicted sex offender as part of their investigation into allegations of sexual abuse by Jimmy Savile. (Photo by Warrick Page/Getty Images)

  • Culture, Media and Sport select committee

    BBC Director-General George Entwistle leaves Portcullis House in Westminster, London, after being quizzed about the corporation's handling of the Jimmy Savile sex abuse scandal by a committee of MPs.

  • Culture, Media and Sport select committee

    BBC Director-General George Entwistle (front left) and Head of BBC Editorial Policy David Jordan (front right) give evidence to the Culture, Media and Sport select committee in the House of Commons, London, on the corporation's handling of the Jimmy Savile sex abuse scandal.

  • Culture, Media and Sport select committee

    Head of BBC Editorial Policy David Jordan gives evidence to the Culture, Media and Sport select committee in the House of Commons, London, on the corporation's handling of the Jimmy Savile sex abuse scandal.

  • Culture, Media and Sport select committee

    BBC Director-General George Entwistle gives evidence to the Culture, Media and Sport select committee in the House of Commons, London, on the corporation's handling of the Jimmy Savile sex abuse scandal.