What are 6 different classes of information concerning the Official Secrets Act?

Had it written down in my notes but hold no idea what im talking roughly speaking...

Apperently its contained in sections 1,2,3,4,6
Top Secret
Thought it was five : Protect, Restricted, Confidential, Secret and Top Secret.
Having signed the administrator Secrets Act you may not divulge-
A- Any information you have obtained to be precise classified as an 'Official secret'.
B- You may not communicate an 'Official Secret' to anyone else.
C. An 'Official Secret' is secret and must not be revealed.
D. No matter how boring it is, an 'Official Secret' is covert.
E- 'Official Secrets' can be secret for up to 7O years even if they are not really secrets, lone embarrassing.

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