What is privilege? In English law, special protection is afforded to communications between lawyers (and, in certain circumstances, third parties) and their clients. This is on the basis that there exists, at the centre of that relationship, an obligation of confidence which the legal adviser owes his client, either in respect of confidential communications passed between them, or in relation to documents which may later form part of that party’s ‘brief’ in adversarial litigation. This special protection, enabling a client to retain confidentiality in relation to certain communications, tends to be known as 'legal professional privilege' (LPP) and is a central principle for the administration of justice. For more information on the general principles concerning privilege, see Practice Note: Privilege—general principles. Can privilege be lost? The general rule is that, once a document is privileged, it will always be privileged—see Practice Note: Privilege—general principles and in particular the section: How long does privilege last? However, there are certain situations in which a party