Reports coming in from Twitter that they are filming in St. Paul's area, doesn't sound like any principal actors are there, although something is mentioned about a double decker bus there (Moral Sacrifice Bus???). A Helicopter supposedly involved as well.
this twitter account reporting and may have some pictures later, hopefully...
https://twitter.com/natrtpodcast
I originally found this from Thor2fans twitter
https://twitter.com/Thor2fans