The solicitor for the man convicted of murdering former BBC presenter Jill Dando says new evidence undermines the safety of his conviction.
The murder shocked the nation
Barry George was convicted two years after Jill Dando was shot once in the head on her doorstep in London in 1999.
He was jailed for life but has always denied the murder. In 2002 he took his case to the Court of Appeal and lost.
His lawyers are seeking a new appeal partly because medical reports suggest he was incapable of the killing.
Examinations suggested he was not capable of committing the crime because of his mental disabilities, his legal team will argue.
A second plank to their case is that two new witnesses say they saw armed police at the scene when George was arrested, contrary to what police have insisted.
Doubts were raised about his conviction
George's lawyers say this is significant because the only forensic evidence that linked George with the murder was a particle from gunshot residue.
He thinks the presence of armed officers and their involvement in his arrest was responsible for this residue.
The third part to the appeal is previously undisclosed expert profile reports which support George's defence.
His lawyers have presented their case to the Criminal Cases Review Commission.
It has the power to refer the case back to the Court of Appeal if it believes there is a real prospect the conviction will be quashed.