The Financial Services Authority (FSA) has charged four men with conspiracy to commit insider dealing in what the agency claims is its largest and most complex insider trading investigation to date.

Martyn Dodgson, a former senior corporate broker at Deutsche Bank; Andrew Hind, a director of Deskspace Offices; private stock broker Benjamin Anderson; and businessman and investor Iraj Parvizi have been bailed to attend Westminster Magistrates’ Court on 19 October. The allegations relate to activities between 2006 and 2010.