In its first set of results as a public company, Groupon reports an unexpected loss of $42.7m (£27.0m), when a small profit had been expected.

Media giant News Corporation sees its net profits rise 65% in the three months to the end of December 2011 compared to 2010.

The Greek prime minister has failed to secure his coalition parties' agreement to fresh austerity proposals, needed to agree a new bailout package.

Real Madrid head the list of the richest football clubs in the world for the seventh year in a row, says a Deloitte survey.

UN Chief Ban Ki-moon says the Arab League plans to revive its mission to Syria and accuses Damascus of stepping up "war on its own people".

The Duchess of Cambridge carries out her first solo public engagement, attending a preview of a new Lucian Freud exhibition in central London.

Prince Harry has qualified as an Apache helicopter pilot after 18 months of rigorous training in the UK and the US, the Ministry of Defence says.

China's rate of inflation accelerates to 4.5% in January as consumers raise spending around Chinese New Year.