Smashburger is looking to move into the U.K. while also readying its biggest ad effort in the U.S. For the U.K., the company has hired Tim Lowther, who has worked with Shake Shack and Five Guys across the pond. He will be managing director. Smashburger is also scouting locations there toward a target of 35 locations. In the U.S., where it has over 400 stores, the company hired Minneapolis-based Mono as AOR and is prepping a print, radio, out-of-home and “experiential” advertising campaign.