This is often a matter of debate between the two parties, as the discloser would like the agreement to be more comprehensive than the receiver. However, if the discloser makes too much information confidential there is the danger that the court will not uphold the NDA because of vagueness.
Documents that should always be marked as confidential include:
There is some information that cannot be treated as confidential:
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The information on this page applies to England and Wales only.