Encrypting to self

[Andrew Meredith]

Ian Goodyer wrote:
> Is 'encrypting to self' or 'keeping a copy of the plaintext
> available' already law.

I don't understand what possible use a purported copy of the plaintext
would be unless you can prove that it was what you were claiming it to
be. If I don't need to be able to prove that it is, then I can hold a
database of all outgoing encrypted traffic very simply .. in fact here
it is:

   "Hi There, How are you? How's the weather been? Cheers Andy M"

Do you think I'll get away with it?

Andy M