I knew that you'd be an expert on this subject. I'd worry more about Switzerland if I was you. ;)The only figure you need to worry about
Exports UK > Germany 34bn
Imports UK < Germany 79bn
Now if the rEU wants to put trade tariffs on after Brexit add say 10% to both figures and who is the winner?
This is why any trade negotiations after Brexit will be on our terms.
http://www.bbc.co.uk/news/uk-politics-eu-referendum-35615604