Politicians from around the world today said they are 'deeply disappointed' at Mark Zuckerberg and posted a picture of his empty chair on the internet when he refused to appear before them at the UK Houses of Parliament.

The Facebook boss was 'empty chaired' when he snubbed a special meeting of politicians from nine different countries who want to grill him on the Cambridge Analytica scandal, privacy breaches and the spread of disinformation.

Mr Zuckerberg refused to appear before the committee despite being invited six months ago, and sent British Facebook executive and peer Richard Allan in his place.

And during the hearing of the 'grand committee' at the Commons, British politician Damian Collins revealed a Facebook engineer in 2014 warned bosses that Russians were harvesting three billion bits of dataa day.

The revelation, which was contained in an internal Facebook email within a cache of secret documents seized by the committee last week and still under seal in the US, raises fresh questions about the firm's privacy breaches.

After exposing the previously unreported data harvesting operation, Mr Collins asked if Facebook had taken any action.

He said: 'An engineer at Facebook notified the company in 2014 that an entity with Russian IP addresses had been using an API key to pull over three billion data points a day...was that reported to any external body at the time?'

The politicians from nine different countries today posted this photograph of Mark Zuckerberg's empty chair (pictured) on Twitter after being left furious at the Facebook boss' refusal to give evidence to them in the