Two of Britain ’ s most distinguished actors are set to star in a £6million film ‘ co-written ’ by a leading figure of the Jihadi John apologist campaign group , Cage . Sir Ben Kingsley and Emily Watson will be working alongside an award-winning team in ‘ The Secret Evidence ’ . Golden Globe-winning producer J Todd Harris is said to already be on board , and the film has commitments from Emily Watson , Sir Ben and Lily Collins . Scroll down for video . Actors Sir Ben Kingsley and Emily Watson are among stars to have signed up to the film that has been reportedly co-written by the Cage spokesman . Last night The Mail was unable to contact representatives of the stars , who are believed to have made the commitment to the movie long before the controversy surrounding Cage . The film , which is supported by civil rights group Liberty , is thought to have been co-written by former terror suspect and Cage spokesman Cerie Bullivant . He spent two years under a control order before eventually being exonerated , and the film is believed to be loosely based on his own experiences . But Mr Bullivant ’ s involvement became an embarrassment for the movie after the unmasking of Mohammed Emwazi as Jihadi John . Last month Cage sparked outrage by defending the London-raised fanatic unmasked as the Islamic State butcher . The group described Emwazi as a ‘ beautiful and gentle ’ man who was driven to radicalisation by MI5 . Promotion : The leaflet for the film showing Miss Watson , Saoirse Ronan and Sir Ben Kingsley . And Mr Bullivant railed for eight minutes about the treatment he had received at the hands of the security services ‘ in very similar circumstances ’ to those of Emwazi , suggesting it was the MI5 ’ s actions which had led to the brutal killer ’ s radicalisation . The former mental health nurse also claimed UK security forces harassed Emwazi to the point where he had ‘ no options and position within UK society anymore ’ in an official video for Cage . He even went as far as suggesting an alleged assault on Emwazi by the police in 2010 could be directly linked to the beheadings . Speaking to the Islam Channel earlier this month , the 32-year-old said : ‘ He was looking to get married , get a good job and settle down . ‘ If that had happened , if our security forces had not had stopped him , would he be cutting off heads now ? ’ He added : ‘ We have a two year picture of a man constantly…trying to move his life forward and we see a pattern of security services stopping that . ‘ We even see a pattern of the police pinning him up against the wall and strangling him . This is a chilling simile when you look at what he ended up doing to other people. ’ Cerie Bullivant is a former terror suspect and spokesman for the group Cage . Bullivant was in the spotlight again earlier this month when he stormed off in the middle of a live Sky news interview claiming a question on about his feelings on the beheadings was racist . Now the filmmakers behind ‘ The Secret Evidence ’ appear to be trying to distance themselves from Bullivant – perhaps fearing that the link with him could damage their chances of securing the £1million still required to begin production this year . The Mail has seen a document , which was presented to potential investors as recently as last summer , clearly stating that the film was ‘ co-written by Cerie Bullivant ’ . And an invitation to a high-profile event due to be held at the Chiltern Firehouse restaurant in London tonight to attract potential investors – which was sent out earlier this month – said : ‘ It was co-written by Cerie Bullivant , who was wrongly sent to Belmarsh at 23. ’ However , the next day the same invitation was sent out again – but with the line mentioning Cerie Bullivant deleted . The film ’ s award-winning director Nicholas Racz admitted that the invite to tonight ’ s event was edited . He said : ‘ Cerie generously said there was no reason for him to be mentioned . It was an association that wasn ’ t helpful to the movie. ’ He added : ‘ Cerie ’ s involvement was some five years ago where he was involved as a co-writer . This was before his involvement with Cage and the movie is not based on his life . ‘ He has contributed to the script , absolutely , and he will still be paid for that if the film is made but it won ’ t be a significant amount of money. ’ And Liberty director Shami Chakrabarti , who is helping to host the film ’ s fundraising event tonight , admitted Bullivant had ‘ some involvement ’ in the film . She explained : ‘ My understanding is that Cerie Bullivant is one of a number of stories that inspired this film. ’ However she went on to say : ‘ Whatever you may think of Cerie Bullivant , he did suffer a miscarriage of justice many years ago , and there will continue to be many more miscarriages of justice if we continue down this path . ‘ Fiction is more powerful than anything and I really hope this is a great inspiring film exposing secret courts and secret justice. ’ Bullivant described ISIS executioner Mohammed Emwazi as a 'beautiful man ' after his identity was revealed .
ben ##ja Kingsley and Emily Watson among stars due to work on the film . It has reportedly been co - written by casting director mark brown . The former terror ##izer described Mohammed Emwazi as ' beautiful ' Actors are understood to have signed up to film before the controversy .