The European Business Organization Law Review presents three articles, by Schwarcz, Kane and Mayes, analysing some of the main issues regarding principles versus rules in financial regulation. These articles result from papers presented at a symposium in April 2008 entitled ‘Principles v. Rules in Financial Regulation’ organised by the Centre for Financial Analysis and Policy and the Centre for Corporate and Commercial Law Studies at the University of Cambridge. The symposium attracted academics, policy-makers, regulators and practitioners from several leading jurisdictions representing a range of disciplines including accounting, economics, finance and law, who were invited to present papers on specific areas of the principles-versus-rules debate in financial regulation and to discuss the impact of the global credit and financial crisis on principles-based regulation.