This book provides a wide-ranging and insightful analysis of the market abuse regime and the applications of the regulations in the UK and EU. It provides detailed discussion of the implementation and interpretation of the regulation, the conduct of investigations, the defences and appeals available against a finding of market abuse, and overlapping US regulation. This new edition explains and evaluates the changes introduced by the Markets in Financial Instruments Directive and the Market Abuse Directive, the UK Financial Services Act 2012 and the implementation of the Regulation on Wholesale Market Integrity and Transparency, which have resulted in dramatic expansion of the coverage of EU market abuse regulation. It addresses the regulation of additional financial instruments, the expansion to include new markets and trading facilities, and changes to the coverage of commodity derivatives and physical commodities. The book discusses the dramatic changes to the format of regulation as a result of the restructuring of UK regulators; as well as the addition of new EU supervisory bodies with revised powers over national regulation within the EU. Beyond the EU, it discusses international protocols and treaties which have also added to the regulatory structure.