Had a word with a contact from the Serious Fraud Office about the powers or search and seizure of data etc. It looks as though they have wide ranging powers.
They search under Section 2 of the CJA 1987 and occasionally search warrants under PACE. Basically they can ask/search for anything they deem relevant to and investigation. The SFO has their own Computer Forensic Unit (CFU) which appears to do the same sort of work as most forensic units.
Posted by ediscovery 
