The independent research organisation Iraq Body Count has called for a full judicial inquiry in Britain into the number of people killed and wounded in the Iraq war.
The organisation says the Iraq War Inquiry in London chaired by Sir John Chilcot failed to address the issue.
The BBC's Owen Bennett-Jones has been looking at the research that has been carried out into how many civilians died as a result of the Iraq war.
The lowest number of all came in December 2005, from President Bush.
First broadcast 27 August 2010