Good Friday Agreement Implementation Plan 1st August 2001.
In 2010, when the Coalition government was formed, a decision was taken to hold a Review rather than a Public Inquiry.
The review was conducted by Sir Desmond de Silva QC and reported in 2012 but the failure to hold a public inquiry has been the subject of judicial review in the courts of Northern Ireland - see Court of Appeal Northern Ireland at  NICA 7. The Supreme Court has granted Mrs Finucane permission for an appeal "In the matter of an application by Geraldine Finucane for Judicial Review (Northern Ireland) UKSC 2017/0058."
Mrs Finucane argues that the
decision-making process had been pre-determined and the promise made to
her that a public inquiry would be held had been unlawfully frustrated.
Mrs Finucane also questions whether the decision is compatible with
Article 2 of the European Convention on Human Rights. (Regarding Article 2 see McCaughey and Quinn's Application -  UKSC 20).
Dates for the Supreme Court hearing remain to be announced. Court sittings will resume at the start of the 2017/18 legal year which
begins with the Michaelmas term on Monday 2 October 2017.
Collusion and Reports:
A serious concern has been that State Authorities (Army, Police and Security Services) acted in collusion with paramilitaries to bring about a number of killings in Northern Ireland including that of Mr Finucane. A number of reports have considered this.
1) A Review was conducted by Sir Desmond de Silva QC and reported in 2012 - see previous post.
2) A report by former Canadian Supreme Court Justice Peter de Carteret Cory stated that there was "strong evidence" that collusive acts were committed by the Army, the RUC and the Security Service and that there was a need for a public inquiry - see para 1.293 of Cory - Collusion Report 2004
3) There were also reports by John Stevens (now Baron Stevens of Kirkwhelpington). Stevens stated in Overview and recommendations 17th April 2003:
"I have uncovered enough evidence to lead me to believe that the murders of Patrick Finucane and Brian Adam Lambert could have been prevented. I also believe that the RUC investigation of Patrick Finucane’s murder should have resulted in the early arrest and detection of his killers.
I conclude there was collusion in both murders and the circumstances surrounding them. Collusion is evidenced in many ways. This ranges from the wilful failure to keep records, the absence of accountability, the withholding of intelligence and evidence, through to the extreme of agents being involved in murder."