Road rage killer Kenneth Noye is trying to launch a new appeal based on forensic evidence, it was announced on Tuesday.
Noye is being held in a high security unit at a prison in Cambridgeshire
Noye was convicted in 2000 of the fatal stabbing of 21-year-old Stephen Cameron on the M25 Swanley interchange.
The 55-year-old, who is currently being held at the high security unit at HMP Whitemoor in Cambridgeshire, has asked the Crown Prosecution Service (CPS) to give him access to exhibits from the case.
His solicitors have been told to file an application to the Criminal Cases Review Commission (CCRC) once the forensic evidence has been analysed.
Noye's crime was the focus of a television drama screened on Monday night which told the story of Mr Cameron's girlfriend Danielle Cable, who has remained in hiding since the trial for fear of retribution.
Danielle Cable has been in hiding since she testified at the trial
In a statement the solicitors said: "Further work is still in progress and the CPS has been requested to supply various exhibits in the case.
Solicitor Mr Martin said: "To date neither the Metropolitan Police nor the CPS has supplied documents that under normal circumstances would be supplied upon request by defence layers.
"We hope, however that the police and the CPS will co-operate with our requests in order to establish forensically what happened in 1996.
Noye's other legal representative, Giovanni Di Stefano, said: "Our client vehemently denies murder, premeditation or any intent to do grievous bodily harm to Mr Cameron and denies further any knowledge of any kind of witness intimidation at any stage."
The solicitors added they hoped the CCRC would refer the case back to the Court of Appeal if research confirmed the "factual and physical" cause of Mr Cameron's death being "somewhat different" to those heard at the trial.
The statement added: "Mr Noye has asked to make clear he remains convinced the judicial system will recognise that what occurred in 1996 was not intentional, deliberate or murder but a reaction to certain events out of fear."