General principles 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 (LLP), an umbrella term which encompasses legal advice privilege and litigation privilege. For further information on the meaning and rationale underpinning privilege, see Practice Note: Privilege—general principles. See also Practice Note: Legal professional privilege in civil proceedings for a more detailed consideration of the various criteria for both types of LLP. For a document to be privileged, it must be confidential. In order to effectively