The aim of this Practice Note is to provide some guidance about how best to ensure that legal professional privilege (LPP) is maintained for the client during the various stages of a criminal investigation. For information on legal privilege and how it applies in a criminal context, see Practice Note: Legal Professional Privilege in criminal proceedings. For information about LPP generally, see Practice Note: Legal professional privilege in civil proceedings. Preserving privilege during a dawn raid/search and seizure One possibility is that individuals/corporates under investigation receive a visit at their premises/homes, so that the investigators can conduct searches of their property and arrest them for the purposes of interviewing them. This is often described as a 'dawn raid'. Many individuals and corporate entities are not sufficiently prepared for these raids and often LPP material is contained in computer files and dotted around the office/home, rather than separated off in electronic and hard copy files, clearly marked ‘Privileged and Confidential’. Where LPP material is stored on a computer,