Ra One Shah Rukh Khan

The shooting was originally supposed to begin in Miami, USA, but due to budget concerns this was scrapped. The first phase of filming began in India in March 2010 till May 2010 in Mumbai's Film City and Goa.The crew then moved on to London in June 2010 where the filming with the entire cast took place during July–August and has been completed. In an interview, Khan stated that the remaining portions would be completed in India & would require further 6 months of post production.

Khan also requested his long time collaborator & director Karan Johar to be present during shoot in London. While they were in London, media reports suggested Johar may have directed some romantic portions of the film; this was later denied by the director.

Ra One
Kareena Kapoor plays the female lead alongside Khan in the film whilst Arjun Rampal will be seen as the villain. During an appearance on the chat show Friday Night with Jonathan Ross, Khan stated that Jackie Chan was "approached for a role in the film". Khan had reportedly sent Chan the detailed script of the film, along with the action sequences and a brief synopsis of his character; it was later confirmed that Chan would not be part of the project.In July 2010, Khan announced that Chinese-American actor Tom Wu would be part of the film.

Ra One

Ra One
In September 2010, reports indicated that Khan had signed Hans Zimmer to compose the background score for the film.However in early 2011, the director of the film dismissed it as a rumor & stated that Vishal-Shekhar have worked on the background score of the movie. He also stated that Akon is doing two songs for the film. The singer arrived in India on March 8, 2010 and recorded two songs with composers Vishal-Shekhar.