The Avengers 2 is set to start production next year at Marvel Studios' new go-to facility, Pinewood-Shepperton Studios in London. Thor: The Dark World shot at the U.K. studio this year, with Guardians of the Galaxy shooting there this summer. Marvel's The Avengers was shot entirely in the U.S.
Little is known regarding the story of this Marvel Phase II sequel. Joss Whedon is returning to write and direct, with Marvel's The Avengers stars Robert Downey Jr., Chris Hemsworth, Chris Evans, Jeremy Renner, Scarlett Johansson, Samuel L. Jackson, and Mark Ruffalo all slated to return.
Other major productions that have recently shot at Pinewood-Shepperton include Maleficent, Jack Ryan and The Muppets... Again!. Disney's live-action Cinderella is about to start shooting there in the near future.