Elliott, who earlier this year stepped down as ITV's director of drama, said he was unhappy with the film and that it would not be broadcast in its current form.
The Marchioness Disaster, a co-production between Yorkshire Television and indie Chameleon Television, depicted the events in August 1989 when 51 people drowned after a party boat sank in the Thames.
Elliott said that he was unhappy with the style of the film, saying that it was confusing and he did not like the ending which sees two characters speak directly to camera because it felt like the viewer was being preached to.
He said: '[It feels] like we are on the receiving end of homilies - If you have people talking into the camera like that then that is not drama.'
He added that the decision not to air the show had been through two ITV management regimes that upheld his decision not to show the drama - initially when Nigel Pickard was director of programmes, and now with Simon Shaps as director of television. Elliott said that the network would be happy to sell the drama to another broadcaster if they wished to buy it.
The programmes producers defended the show, saying that ITV had seen a number of scripts, which included all the details that Elliott had a problem with.
Earlier this week some of the bereaved families lambasted the network for screening the programme at the Edinburgh TV Festival describing the move as insensitive.