While sounding out the difference between disruption as a market force and disruption as a business strategy, themes emerge.

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Last year there were lengthy spells with no cover and there was disruption caused by hurricane-force winds.

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Meeker made the point back in 2009 that the Mobile platform will be the next great computing cycle, creating, as she put it, the greatest force for business disruption and wealth creation in history.

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Mr Moore told the BBC News Channel the Border Force aimed to keep disruption to a minimum but "would not compromise on the safety and security of the UK".

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The disruption in the U.S. sales force was blamed for the decline.

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In the west, a yellow warning is in force, which means to be aware of potential disruption.

BBC: Snow and sleet forecast for Northern Ireland

Gritters will be out in force after a day of snow caused the closure of 233 schools in Surrey and led to widespread travel disruption.

BBC: Surrey snow: Further disruption expected