A Norwich Pharmacal order (NPO) requires a respondent to disclose certain documents or information to the applicant. This practice note summarises the law and procedure relating to NPOs. In particular, the note explains the types of case in which Norwich Pharmacal relief may be appropriate, compares the relief with disclosure under CPR 31 and Bankers Trust orders, and considers the availability of relief in cases with a foreign element. It also sets out the procedure for applying for an NPO.