http://manlymovie.net/2014/07/london-has-fallen-filming-delayed.html
London Has Fallen Filming Delayed
By The_Night_Rider on July 30, 2014
Filming for London Has Fallen, sequel to Olympus Has Fallen, has been delayed from September to December. The film will shoot primarily in Bulgaria. It’s not clear why the delay has come in yet. A director is also still not officially attached to the movie.
However it looks like it’s probably routine scheduling as work is currently ongoing at Nu Boyana studios in Bulgaria to create physical reproductions of some of the tallest buildings in London. This was confirmed to ManlyMovie by a source close to Nu Boyana a few weeks ago, the constructions being described as “huge”.
Gerard Butler and Aaron Eckhart are the only confirmed returning cast members.