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When is the right time for a chief executive to choose to step down? From Arsenal FC to British Airways, many bosses are refusing to bow to the pressure.

Ed Butler gets the views of corporate expert and author of "The Secrets of CEOs" Steve Tappin, as well as from Professor Chris Brady, director of the Centre for Sports Business at Salford Business School.

Plus, with a week to go until the British general election, are UK-based scientists already suffering from the country's imminent departure from the European Union? Rob Young reports from Manchester.

(Picture: Arsenal manager Arsene Wenger checks his watch; Credit: Laurence Griffiths/Getty Images)