Bernard Rose’s new film is a sparse, quietly naturalistic slow-burner that grapples with some of the big questions through the medium of a very small story. Underpinned by the fascinating dynamic between its two leads, Danny Huston and Matthew Jacobs, and swinging from the banal to the life-or-death in a heartbeat, Boxing Day is an oddly affecting film that – despite taking a while to get to the point – has a deeply moving and important message at its heart.