International law is increasingly referred to and utilised in English courts,in fields as diverse as criminal proceedings, children's rights, tort law, and asylum cases. Despite this use, there is currently no book on the market (whether a practitioner text or otherwise) which addresses this subject-matter in detail. Hence the need for this book - by a practitioner and for practitioners, regardless of their specialist area of practice - on how international law is and can be used in the domestic courts. The book presents in a distilled format the relevant principles of law, and their application in this area and provides a guide to relevant international instruments and the way(s) in which these instruments have been referred to or used in English courts. While the emphasis is on stating the law as it is, the author also identifies the principles which are likely to guide practitioners in an otherwise unstructured area, supported by specific examples which will provide a subject guide to relevant instruments and sources and how they can be used.