 Post @-@ production work was handled mostly by <unk> <unk> , who had worked on previous Guinness campaigns Surfer and <unk> , and had worked with Daniel Kleinman on a number of outside projects , including several commercials and James Bond title sequences . The project was overseen by William Bartlett , known for his visual effects work on the BBC television documentary Walking with Dinosaurs . The original schedule allowed for three and a half months in post @-@ production , with airing of the commercial to follow almost immediately . 
