The annual celebratory Great British Beer Festival kicks off today with 4 days of beer appreciation planned for the beer lovers of Britain.

Held within the Grand Hall of London's Olympia the festival will present some of the best beer brewed from all over Britain. International brews will also be represented win beer on offer from Japan, Australia and the U.S.

With over 800 different varieties of beer on offer many call the festival the world's largest pub.

The event is organized by the Campaign for Real Ale and day tickets can be purchased for around £8.