This book proposes a new model of professional ethics enabling lawyers to advise clients upon both the law and ethics. This will better protect clients, and society, and enhance lawyers’ professional obligations. The current model of legal ethics, developed in the 19th century, specified that the role of lawyers was only to interpret the law, not also to give ethical advice. This was acceptable to lawyers, clients, and society at that time. However, this is not the case now and legal ethics no longer reflects the needs of modern legal practice. This book draws on moral philosophy to present a new model of legal ethics that explains the analytical process to include ethical advice. It analyses the potential harm of the present model to the legal profession who have duties to the law and justice that may compete with demands by clients to serve them. Further, lawyers’ duty to clients to act in their best interests is sometimes not adequately fulfilled as legal ethics does not permit lawyers to give ethical advice even if it may be in clients’ best interests to do so. The work includes a detailed case study of corporate law practice to show why a new legal ethics is required. Other case examples are provided to demonstrate that lawyers practicing in all areas of law encounter ethical issues and they too will benefit from a new legal ethics. The book will be essential reading for students, academics, lawyers and professional bodies.