Further evidence came this week that the U.K. Financial Services Authority is taking a tougher stance on enforcement. Charging two suspects in an insider dealing case, the regulator for the first time sought the extradition of a suspect from abroad.

The FSA used a European Arrest Warrant issued by a London court to empower the authorities in the French territory of Mayotte to arrest a Singaporean national. Mayotte is a small island in the Indian Ocean.