Recently we had it confirmed that both Black Panther and Avengers: Infinity War would begin shooting next month at Pinewood Studios, in the Atlanta area. It’ll be an interesting juggling act for the studio to balance the productions of two massive films shooting on the same stage space.
We’ve now discovered new production information that has revealed that some of the Avengers shoot will take place both in Atlanta and London, UK. They also have listed day-of production start date for Infinity War, which is reportedly January 23rd, 2017. 
SOURCE: MY ENTERTAINMENT WORLD