The BBC was last night accused of suppressing an interview that called for corporation boss Rona Fairhead to resign over her £10,000-a-day second job at scandal-hit HSBC bank . It ’ s a new blow to Mrs Fairhead , chairman of the BBC Trust and a non-executive director of HSBC , who is facing growing calls to quit one of her high-profile jobs over claims of a conflict of interest . She is due to be questioned by MPs tomorrow after The Mail on Sunday revealed that she was paid £513,000 for just 50 days work at the troubled bank last year , vastly exceeding her £110,000 salary for what is supposed to be her main job overseeing the BBC . Last month HSBC came under fire over allegations that its Swiss banking arm helped wealthy clients dodge millions of pounds of British taxes , and that it sought to influence media coverage . Silenced : Retired businessman Michael Mason-Mahon ( right ) who said Rona Fairhead was not a fit and proper person to be chairwoman of the BBC Trust , will not be shown . Now an HSBC shareholder has claimed the BBC refused to broadcast an interview with him in which he declared that Mrs Fairhead was not a fit and proper person to be heading the Trust . Retired businessman Michael Mason-Mahon says he was invited to Broadcasting House in Central London to discuss the turmoil at HSBC in an on-the-record interview with a BBC business reporter on February 23 . His interview failed to feature in the broadcaster ’ s coverage of the HSBC story that evening . He believes it was shelved because of his remarks questioning Mrs Fairhead ’ s fitness to run the Trust . He said : ‘ I said during the interview I disagreed with her appointment as BBC Trust chairwoman . ‘ I couldn ’ t understand why a non-executive director who is there to protect the shareholders ignored us when we told her on numerous occasions in the past about illegal behaviour that was going on involving HSBC . ‘ It ’ s my personal belief she ’ s not a fit and proper person to be chairwoman of the BBC Trust . The HSBC item was shown , but my interview was not in it . I believe it may have been suppressed. ’ Mr Mason-Mahon has attempted to obtain a copy of the interview but has been told that this would be against BBC policy . Mr Mason-Mahon is well-known for his outbursts at the annual general meetings of big public companies . Last May he brought a lawsuit against HSBC ’ s North American arm after it was fined £1.2 billion having been found guilty in 2012 of allowing Mexican drug cartels to launder money . Last week former BBC chairman Sir Christopher Bland called on Mrs Fairhead either to give up her post at HSBC or to resign from the Trust . Tomorrow she is due to appear in her role as an HSBC Board member in front of the Commons public accounts committee , which has fiercely attacked tax-dodging corporations . Last night the BBC declined to say why the interview with Mr Mason-Mahon was not broadcast and whether or not Mrs Fairhead – who is not supposed to be involved in editorial decisions – was told about it . A spokesman pointed out that it was the BBC ’ s Panorama programme that originally broadcast the highly damaging allegations about HSBC ’ s Swiss banking arm and added : ‘ Like every news organisation we don ’ t use every interview we conduct . 'It is simply wrong to suggest that we would not broadcast an interview due to it criticising someone associated with the BBC . ’
Called for Rona Fairhead to resign over £10,000-a-day second job . Due to be questioned by MPs after Mail On Sunday revealed payments . Figure dwarfs £110,000 salary of main job overseeing BBC . Axed interview said she was not 'fit and proper person ' to be in charge .