consultancy

And Mark Zandi, an economist at the financial consultancy Moody's Analytics, says: "It will result in continued massive budget deficits, and a high and rising debt load."

Drew Benvie, chief executive of social media consultancy Battenhall, said Mr Bier's experience in developing features that engage younger users, like anonymous polling, makes him hopeful his arrival could bring some "X-factor" to the platform.

Analysts at the energy consultancy Cornwall Insight have forecast a further 1% drop in October.

Sam Gupta is the founder and CEO at ElevatIQ, a technology and management consultancy that operates out of Buffalo, New York, and in Toronto.

According to data from aviation risk consultancy Osprey Flight Solutions, six commercial aircraft have been shot down unintentionally, with three near-misses, since 2001.