Britney Spears takes a tour of London on a red bus

Britney Spears has seen some of London's famous sights during a tour on one of the capital's famous red buses. The singer, who is in the UK to promote her new single, spent most of her time on the sheltered bottom deck.

Warning: Flash photograph

Britney's been tweeting a lot during her stay here, in what she describes as "Merry Ole England". After her bus tour she said: "Had a wonderful time riding around London on the tour bus this evening!! It was freezing outside! Brrrr :)"