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Last Updated: Sunday November 01 2009 12:46 GMT

In pictures: Fireworks celebrate 2012 Olympics

The BT Tower in London

A huge fireworks display lit up the sky in London on Saturday, to celebrate the Olympic Games being held in the capital in 2012.

The BT Tower in London

The fireworks were launched from the BT Tower to mark the fact that the Olympics will start 1,000 days from the 31 October.

The BT Tower in London

Thousands of people are working on the Olympic site to make sure it's ready on time. By early 2010 as many as 10,000 people will be busy building the venues.

The BT Tower in London

The display could be seen from across London. It's likely a much, much bigger one will begin the Games on 27 July 2012.