Regulation 6 Proof of identity of sender or recipient of information
If it is necessary to prove, for any purpose, the identity of—
(a)
the sender of any information delivered by means of electronic communications to an official computer system, or
(b)
the recipient of any information delivered by means of electronic communications from an official computer system,
the sender or recipient (as the case may be) shall be presumed to be the person recorded as such on an official computer system unless the contrary is proved.