The great financial crisis intensified at ultra-high speed thanks to super-fast broadband connections and increased computer processing power. Time to switch the machines off? No. But it is surely time to manage the flow of information better.

This will not be easy. Research led by the husband-and-wife-team Professors Andrew and Nada Kakabadse (he is based at the Cranfield school of management, she is at the Northampton business school) has revealed the depths of managers’ addiction to new communication technology. Around a quarter of the 1,200 professionals surveyed spend three or more hours a day on their e-mails and sending text messages. More than half the younger and middle-aged respondents never turn their phones off at all.