The book highlights the impact of market manipulation as one of the causes of the global financial crisis in 2007-2008. The book offers a comparative analytical review of the UK and US responses to market manipulation in the financial markets, and the impact of shaping the development of financial services regulation in both countries. This monograph therefore provides a new and unique insight to the current debate on the global financial crisis, which may be of value to government policy- makers, law enforcement agencies, regulators, private sector and academia alike.