Diwali in London, popularly known as Diwali on the Square or Diwali celebrations on Trafalgar Square, is a massive celebration held during the Diwali period in United Kingdom. Diwali in Londonin 2010 is on Sunday, October 31 from 1400 hrs to 1900 hrs. The festival on Trafalgar Square will witness fireworks, live music and dance performances, and dancing and is open to the public. It must be noted that Diwali in 2010 is on November 5. Diwali in London is usually held a couple of days or sometimes week earlier. You can find more details of Diwali on the Square here at the official website.