Ford Motor Co. has urged both Britain and the European Union to create an ambitious and investment-friendly deal as the U.K. embarks on the process of leaving the 28-nation bloc.

The comments by Jim Farley, Ford’s president of Europe, are important because the company employs around 14,000 people in the Britain – and has a supply chain which employs around 90,000. Automakers like Ford are heavily exposed to any new tariffs resulting from Brexit.

Farley described the worst case scenario as reverting to World Trade Organization rules whereby there would be tariffs on trade.