Hi Anna,
I come from Chesterfield where my German pork butcher ancestor lived. In searching through Chesterfield Census data came across the following pork butchers.
Krammer, Augusta
Kraut, George William
Studer, Frederick
Baum, Thomas
Boam, Christopher
Chevin, John
I see Kraut is one of your names. Try putting a search on each census from 1851 onwards with place of birth, Germany. Don't use Wuerttemberg to begin with because the recorded spelling 'beggars belief' the enumerators wrote down what they heard! With the place they lived as Yorkshire or Derbyshire you should get a short list of all those born in Germany.
Hope this helps
Carol Woodhouse