Brexit negotiations are coming to a head at an intergovernmental meeting on Oct. 15, hopefully bringing to a close four years of uncertainty for supply chain planners. The U.K. Prime Minister, Boris Johnson, has stated that “the UK is prepared to end the transition period on Australia-style terms if an agreement could not be found”, namely a willingness to start 2021 without preferential customs or trade conditions. That could lead to stockpiling by year end, customs disruptions in Q1 and a long-term loss of competitiveness for U.K. exports. U.K. merchandise trade fell by 15.2% year over...