Sir Tom King was the Northern Ireland Secretary under Thatcher's government, and served during the time Pat Finucane was murdered.
He told ITV News that today's review by Lord de Silva was important as it rejected allegations that the government was involved in any plan to kill the Catholic solicitor.
The family of Pat Finucane labelled today's review into his murder is a 'whitewash' despite 'shocking' levels of state collusion revealed.
A government-commissioned report found state agents were involved in the murder of Pat Finucane - but his widow dismissed it as a "sham".
The review into the death of a Catholic solicitor during the Troubles is expected to show state collusion with loyalist terrorists.