Speech impediment - Locale in R under OSX

My R-installation developed a language problem ("L" is a statistical ploglamming language). The startup message, all errors and system messages started appearing in German. I do speak German but it was still quite annoying. This ended with a work-around that I published previously in a post about R-startup scripts. I have finally figured out what causes the error. My Language & Text settings for language were as follows:

1. British English 
2. Swedish
3. Norwegian
4. Danish
5. German 
6. French 

The problem lies in using the British English locale. I use it because I hate when all programs always correct my excellent spelling from Proper English™ to American. R does not have a locale for British English, nor for Swedish, Norwegian or Danish. So, to R, the locale priority list actually looks like this:

1.  
2. 
   
3. 
   
4. 
   
5. German 
6. French

So, understandably it goes for what it knows. The solution is to extend the list and put a standard English locale high up:

1. British English
2. English 
3. Swedish
4. Norwegian
5. Danish
6. German 
7. French