The review found RUC officers proposed Mr Finucane be killed.
Sir Desmond de Silva QC carried out the review at the government's request. The Finucanes want a public inquiry as they fear the full truth will not emerge.
It said they passed information to his killers and failed to stop the attack and then obstructed the murder investigation.
After meeting David Cameron in Downing Street last year, Geraldine Finucane told journalists:"I would just like to say that I can barely speak to the media on this occasion because I am so angry and so insulted by being brought to Downing Street today to hear what the prime minister had on offer.
It also found that an Army intelligence unit, the FRU, "bears a degree" of responsibility because one of their agents, Brian Nelson, was involved in selecting targets.
"He has offered a review."
However, it concluded that Nelson did not provide his handlers with details of the plot against Mr Finucane.
Loyalist paramilitaries, the Ulster Freedom Fighters (UFF) shot 38-year-old Mr Finucane 14 times in front of his wife and three young children as they sat at the dinner table.
It found that MI5 received intelligence two months before the killing that Mr Finucane was under threat but that no steps were taken to protect him.
He was a high-profile solicitor and his clients included IRA hunger strikers, and families involved in shoot-to-kill allegations against the police.
It also found that MI5 helped spread propaganda against Mr Finucane in the years before he was killed.
The publication of Mr de Silva's report follows a review of all the existing documentation on the murder. It was not a fresh inquiry.
Sir Desmond found that "in 1985 the security service assessed that 85% of the UDA's 'intelligence' originated from sources within the security forces".
Commons statement
And he was "satisfied that this proportion would have remained largely unchanged" by the time of Mr Finucane's murder."
Prime Minister David Cameron is due to make a statement on its findings to the House of Commons later.
Mr Finucane's family have said the review falls far short of the full inquiry for which they have campaigned for years.
Sir Desmond de Silva QC carried out the review at the government's request. The Finucanes want a public inquiry as they feared the full truth would not emerge.
Speaking last month, Mr Finucane's widow, Geraldine, said the announcement that the review would be published in full was not a guarantee of openness and transparency.
Speaking in the House of Commons on Wednesday, Mr Cameron was strongly critical of the RUC and Army for their conduct in relation to the killing.
"Vital information has already been removed from the report by the de Silva review team prior to checking by security officials, MOD personnel and the PSNI," she said.
He said Sir Desmond concluded that there was "no political conspiracy" over the murder but that "ministers were misled".
"By the time the report is made public, it will have been sanitised completely, to ensure that the least possible amount of discomfort is caused to the government and the British state."
Mr Cameron added that the report found "no evidence whatsoever that any government minister had fore-knowledge of Mr Finucane's murder".
Mr de Silva said his report would include a volume of the key relevant documents relating to the murder which was, he said, "an exceptional step for a review such as this to take". He said he felt this was important to ensure public confidence in his report.
He said that on behalf of the government and the whole country he wanted to say to the Finucane family that he was "deeply sorry".
The year before he was murdered, Mr Finucane had defended former hunger striker Pat McGeown, who had been charged with helping to organise the murder of two Army corporals who drove into an IRA funeral cortege in west Belfast. Mr Finucane succeeded in getting the charges against his client dropped.
However, it is claimed a double agent passed a photograph of the solicitor taken outside the court to the UFF gunman who carried out his murder.
The double agent was Brian Nelson, who compiled information on potential targets for the UFF whilst at the same time working for British army intelligence.
Police accused
The gunman was Ken Barrett, who later told the BBC Panorama's that he had carried out 10 loyalist murders. Barrett was found guilty of Mr Finucane's murder in 2004.
Two years earlier Barrett had told Panorama's John Ware, in a secretly recorded conversation, that a police officer had suggested he target Mr Finucane.
"To be honest," claimed Barrett, "Finucane would have been alive today if the peelers hadn't interfered... solicitors were kind of way taboo, if you know what I mean?
"We used a lot of Roman Catholic solicitors ourselves, they were taboo.. you didn't touch them."
Although the former Metropolitan police chief Lord Stevens found there had been collusion in the murder, Mr Finucane's family have always insisted only a full inquiry would determine how high up the chain of command responsibility ran.
The case featured in the negotiations on restoring devolution at Stormont and Tony Blair promised to set up an inquiry. However the Finucane family believed the law under which it would operate - the 2005 Inquiries Act - would enable the government to interfere and suppress unwelcome details.
