European Union officials have enlisted one of Britain's most popular pastimes, the pub quiz, in their battle to win over the public.

The office of the European Parliament in London has devised a special quiz to celebrate Europe Day, an annual celebration which was marked across the continent on Saturday.

Questions include: How many staff does the European Commission employ? How many time zones are there in the European Union? What is EU's guiding principle which means decisions should be taken as close to the citizen as possible?