Man Utd v Barca: Fans set for Champions League final

Thousands of excited football fans have begun arriving at Wembley Stadium for the Champions League final.

Supporters of both teams have been congregating outside the stadium, where a huge police operation is under way to ensure the game passes peacefully. It is being billed as the biggest sporting event in the UK until the London 2012 Olympics.

The game is set to be the most-watched football game between two club sides ever, with up to 300m people expected to view it worldwide.