Revellers across the world are celebrating the end of 2011 and starting to see in 2012 with spectacular fireworks displays which lit up the night skies.

In London a dazzling fireworks display attracted thousands of people who clamoured to see the impressive display.

The London Eye and Big Ben were the focal point for the pyrotechnics, which London Mayor Boris Johnson said would be a fitting way to mark the start of an extraordinary year for the city.