BARRY O’CALLAGHAN took over the role of chief executive at Riverdeep, now EMPG at the age of 30. Before coming on board at the educational media company Mr O’Callaghan was an investment banker for nine years working in London, New York and Hong Kong.

Tullow Oil boss and founder Aidan Heavey has been named as the Ernst & Young Entrepreneur of the Year.

2004 was a record year for production and profit at Tullow Oil and 2005 indicators are encouraging, the company's Annual General Meeting today has heard.

Elan announced today that it has completed the offering and sale of $460m (€400m) in aggregate principal amount of 6.50% convertible guaranteed notes due 2008.