A City stockbroker has become the first individual to be fined for failing to report or stop a client who was engaged in insider dealing, the Financial Services Authority said.

Mark Lockwood, 29, was fined £20,000 ($32,549) for putting through an October 2007 order from a client to sell Amerisur, an Aim-listed oil and gas exploration company, even though he had reason to believe that the trade was based on non-public information about a planned placing of new shares.