French wine exporters have prepared the Champagne market for Brexit by having “overstocked in Great Britain to fill a possible border closure” according to the CIVC industry association. French exports of sparkling wine to the U.K. jumped 60.8% year over year in 1Q ahead of the original Brexit date and rose by a further 16.8% in July. Yet, the U.S. is an increasingly important market, accounting for 20.4% of global Champagne exports in the 12 months to Jul. 31. French vintners face tariff risks if EU-U.S. relations break down further, with French sparkling wines representing 56.8% of the...