QUOTE(buzzons @ Jul 29 2005, 11:45 PM)
bah!, thanks man ** goes on search for laws**
There's a number of different legislations that can be used within the auspices of computer crime. In addition to the DPA 98 and CMA 90, the Misuse of Telecoms Act 1984 is heavily used.
The European Human Rights Act 1998 governs what information can be viewed with regards to IT, and does conflict in the intercepting of information with the DPA.
The Prevention of Terrorism Act 2000 also has provision for the intercepting of information via the GSM networks, Internet or normal phone taps. ISPs can be asked to provide information with the presentation of a valid warrant.
With regards to the ISPs storing certain information, it comes down to resources. ISPs are not required to keep information AFAIK, and would fight this due to the cost of the extra resource and latency on their networks.
I'd also look at the ACPO good practice guide to computer based evidence
and the RIPA 2000 for what can be seen/seized.