For those of us that used to watch 'Yes, Minister' or 'Yes, Prime Minister' will see straight away what is going on. Those programs are as relevant today as they were the year they were broadcast.
The Official Secrets Act is not to protect secrets, it is to protect officials.
Stage One: Refuse to publish in the public interest saying
1. There are security considerations.
2. The findings could be misinterpreted.
3. You are waiting for the results of a wider and more detailed report which is still in preparation. (If there isn't one, commission it; this gives you even more time).
Stage Two: Discredit the evidence you are not publishing, saying
1. It leaves important questions unanswered.
2. Much of the evidence is inconclusive.
3. The figures are open to other interpretations.
4. Certain findings are contradictory.
5. Some of the main conclusions have been questioned. (If they haven't, question them yourself; then they have).
Excellent TV series