Further to my last post, it seems that the Interception of Communications
Act only applies to messages in transit.

For hacking into computers as alleged by Mike, the relevant legislation is
the Computer Misuse Act 1990 -

http://www.opsi.gov.uk/acts/acts1990...00018_en_1.htm

IANAL - I am not a lawyer, but I'm sure the police and CPS will know which
Acts apply.