Burton had also written to ministers before the end of the inquest, dismissing the belief that Peach was killed by an officer as political "fabrication".
As long as at the end of the inquest I'm able to feel confident everything that could be done has been done, I would be satisfied," he said.
"It's important such evidence is fully acquired and assimilated," and it was not "fair or practical" to hear the evidence towards the end of the inquest, she said.
Heaven cited guidelines on the disclosure of evidence at inquests, saying the family believed the MoD had clearly breached these by not producing the documents until the very end of the inquest, by which point all witnesses had been cross-examined.
Speaking outside court after the end of the inquest, Detective Chief Inspector Jackie Sebire, in charge of the investigation, said: "I've always been satisfied a third party may have been involved in his death and the coroner has confirmed that in her finding today.
Speaking at the end of Luke's inquest, Valentine said: "We weren't being listened to.
At the end of Luke's inquest the coroner said there had been no "gross failure" by the hospital.
At the end of proceedings the inquest heard an unprecedented personal apology from Sir John Sawers, the head of the Secret Intelligence Service [MI6] to Mr Williams' family.
After hearing three months of evidence at the end of last year, the inquest jury was asked to consider whether Duggan was killed lawfully, unlawfully or whether an open verdict should be returned.
MADRID — Spain, whose judges have aggressively pursued human rights abuse cases far beyond its borders, finds itself on the receiving end of such an inquest, as an Argentine judge seeks to extradite and try Spanish police officials accused of torturing opponents of the regime under Francisco Franco, the dictator who died in 1975.
