In case I am not the last person here to have found this. There is another set of lists on the ICRC site which list internees in Switzerland. Change the "Available Files" drop down menu on page 1 to "French, Belgian and British servicemen and civilians interned in Switzerland" and click on validate. An example is FS1938, it is the start of a nominal roll of British soldiers listed in seniority of rank. The list also gives their whereabouts in Switzerland.
Charlie