Jefferies, the US investment bank, has a seen a sharp rise in international revenues, helped by a sevenfold surge in revenues in Asia and the Middle East, as its decision to increase its overseas headcount started to pay dividends.

The figures came as the bank revealed the geographic breakdown of its revenues in its latest quarterly filing with the US Securities and Exchange Commission. Last year, Jefferies moved its year end from December to November so the filing compares the nine months ended August 31, 2011 against the eight months ended August 31, 2010.