The British and American governments’ trade representatives will meet on July 24 to discuss post-Brexit relations. At the initial stage this will need to focus on “commercial continuity” and will just be “preparing the ground” for a trade deal. The U.S. is the U.K.’s single largest export market, and presumably both sides will want business-as-usual commercial operations. Panjiva analysis of each country’s top 500 exports show aerospace is the largest sector, with $11 billion of jets sent to the U.K., and components worth at least $1.3 billion going the other way. Standardized rules o...