The creatures, which appear to look like humans captured through a thermal image lens, were in fact graded and then painstakingly rotoscoped by Escape studios, before being re-supplied to Mill colourist Matt Osborne, who created the striking look for the final film within the grade.

"Working on this promo was a one of a kind experience," comments Matt, "I have been a huge admirer of Sam Pilling's work for a long time, and when I saw the initial treatment I jumped at the chance to grade it. To create a post-apocalyptic look for something that was shot in the day time was a huge challenge. We spent time getting the contrast looking believable, but making sure we still kept details in the shadows. We also layered shapes to add contrast into the skies and ground. After our initial grade (one for the character and one for the background) it was painstakingly roto scoped and supplied back to us to apply our grades and tweaked accordingly."