Former Société Générale investment bank head Jean-Pierre Mustier has been fined €100,000 (£81,950) by France's AMF financial regulator over insider trading as the financial crisis began.
Most financial service practitioners believe the FSA is losing its fight to stamp out insider dealing, research suggests.
The FSA has charged a third individual linked to the Littlewood insider dealing case.
Six people including two senior City professionals "at leading institutions" have been arrested following an insider dealing investigation by the FSA.
The FSA is looking to hire an extra 450 staff to crackdown on insider dealing, Hector Sants has revealed.
A former broker at the Queen's stockbroker Cazenove has been handed a 21-month prison sentence for insider dealing in the shares of three UK companies.
A former partner at Cazenove, the Queen's stockbroker, who is due to stand trial on insider-dealing charges next week appeared in court for a pre-trial hearing yesterday.
The level of insider trading on the stock market prior to takeover bids remained high at 23.7% in 2005, according to a report from the Financial Services Authority.
The FSA has today revealed it is prepared to go after insider traders who work directly outside the financial services industry after fining a former PR executive for abusing insider information to his own advantage.