The results and analysis for Blu-ray (and DVD) sales for the week ending 12th January 2013 is in. Dredd topped the Blu-ray charts for the week, being the first new to home video release that I can remember that was limited to a single Blu-ray 3D and 2D combo release (thus making Blu-ray 3D sales share for the movie to be 100%).
You can read the rest of the stats and analysis here