<P> The production also filmed at several locations in Kent including Fort Amherst, Knole in Sevenoaks, and The Historic Dockyard Chatham . The White Cliffs of Dover can also be seen in the background of the scene where Watson and Sherlock travel by boat to France . </P> <P> The slow - motion work in the film was done by Gavin Free, an English filmmaker who works for Rooster Teeth Productions and is known for his web series The Slow Mo Guys . </P> <P> The score was composed by Hans Zimmer . Zimmer and director Guy Ritchie traveled to Slovakia, Italy, and France to research the authentic Roma music . Zimmer and his core musicians all with National Democratic Institute members, visited seven Roma villages to learn about the Roma people and "listen to as many musicians as we could ." Deeply impressed, Zimmer arranged for 13 of the Roma musicians with their violins and accordions to join him in Vienna at a studio for a recording session . Zimmer wove this Roma music into the score for Sherlock Holmes: A Game of Shadows . Besides discovering the wonderful cultural music, Zimmer also said he had never seen such poverty in Central Europe . A portion of proceeds from the soundtrack will help the Roma pay for necessities like water, heating and bus fare to get their children to school . The soundtrack also contains works of Johann Strauss II, Wolfgang Amadeus Mozart, Ennio Morricone and Franz Schubert . </P> <P> The film was released on 16 December 2011 in Canada, Russia, the United States, the United Kingdom, and Mexico; on 25 December 2011 in most other countries; and on 5 January 2012 in Australia, Poland and Spain . </P>

Where was sherlock holmes game of shadows filmed