Three City of London bankers wanted in the US to face charges linked with the Enron scandal today launched a High Court challenge against a decision by the Serious Fraud Office not to prosecute them in Britain.

Former NatWest investor specialists David Bermingham, Gary Mulgrew and Giles Darby, all 43, say that they are innocent, and extradition would be a violation of their "rights as Englishmen' to be tried by a jury of their peers.