EU referendum: Boris Johnson sings Ode to Joy in German

Boris Johnson sings in German during a speech in London as he insists that wanting the UK to leave the European Union does not make him anti-European.

Encouraged by reporters, the former mayor of London gives a brief rendition of Ode To Joy, the European Union's official anthem.

In a speech studied with historical references, the former mayor of London argues that Europe has a claim to be the cradle of civilization but does not have a common political culture and to quit the EU would be an act of "liberal cosmopolitanism".